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XMMSTACK - XMM-Newton Serendipitous Source Catalog from Stacked Observations (4XMM-DR14s) |
HEASARC Archive |
Overview
The stacked catalog 4XMM-DR14s has been compiled from 1,751 groups, comprising 10,336 overlapping XMM-Newton observations. They were selected from the public observations taken between 2000 February 1 and 2023 November 16 which overlap by at least one arcminute in radius. It contains 427,524 unique sources, 329,972 of them multiply observed, with positions and source parameters like fluxes in the XMM-Newton standard energy bands, hardness ratios, quality estimate, and information on inter-observation variability. The parameters are directly derived from the simultaneous fit, and, wherever applicable, additionally calculated for each contributing observation. Exposures that do not qualify for source detection, for example because of a high background level, are used for subsequent PSF photometry: source fluxes and flux-related parameters are derived for them at the source position and extent found during source detection. 4XMM-DR14s lists 1,807,316 individual flux measurements (visits) of the 427,524 unique sources.Stacked source detection aims at exploring the multiply observed sky regions and exploit their survey potential, in particular to study the long-term behavior of X-ray emitting sources. It thus makes use of the long(er) effective exposure time per sky area and offers the opportunity to investigate flux variability directly through the source detection process. The main catalog properties are summarized in the table below, the data processing and the stacked source detection are described in the processing summary. To ensure detection quality, background levels are assessed, and event-based astrometric corrections are applied before running source detection. After source detections, problematic detections and detection parameters are flagged by an automated algorithm. All detections are screened visually, and obviously spurious sources are flagged manually.
This table contains the parameters of the 427,524 unique sources (provided in this table) derived simultaneously from all of the observations (provided in the associated table of observations referred to as XMMSTACKOB) at the fitted position.
The authors referred to the EPIC instruments with the following designations: PN, M1 (MOS1), and M2 (MOS2). The energy bands used in the 4XMM processing were the same as for the 3XMM catalog.
The following are the basic energy bands:
1: 0.2-0.5 keV
2: 0.5-1.0 keV
3: 1.0-2.0 keV
4: 2.0-4.5 keV
5: 4.5-12.0 keV
All-EPIC values cover the energy range 0.2-12.0 keV.
The full catalog documentation can be found at https://xmmssc.aip.de/.
The following table gives an overview of the statistics of this catalog in comparison with the previous stacked catalogs, 4XMM-DR14s through 3XMM-DR7s:
4XMM-DR14s 4XMM-DR13s 4XMM-DR12s 4XMM-DR11s 4XMM-DR10s 4XMM-DR9s 3XMM-DR7s
Number of stacks 1,751 1,688 1,620 1,475 1,396 1,329 434
Number of observations 10,336 9,796 9,355 8,292 7,803 6,604 789
Time span first to last observation Feb 01, 2000 Feb 01, 2000 Feb 01, 2000 Feb 03, 2000 Feb 03, 2000 Feb 03, 2000 Feb 20, 2000
-- Nov 16,2023 -- Nov 29, 2022 -- Dec 04, 2021 -- Dec 17, 2020 -- Dec 14, 2019 -- Nov 13, 2018 -- Apr 02, 2016
Approximate sky coverage (sq. deg.) 685 650 625 560 540 485 150
Approximate multiply observed sky area(sq. deg) 440 420 400 350 335 300 100
Total number of sources 427,524 401,596 386,043 358,809 335,812 288,191 71,951
Sources with several contributing observations 329,972 310,478 298,626 275,440 256,213 218,283 57,665
Multiply observed sources with flag 0 or 1 276,058 262,842 252,445 233,542 216,999 191,497 55,450
Multiply observed with a total detection 266,129 251,555 241,880 224,178 208,921 181,132 49,935
likelihood of at least six
Multiply observed with a total detection 226,219 213,812 205,394 189,556 176,680 153,487 42,077
likelihood of at least ten
Total measurements 1,807,316 1,683,264 1,592,263 1,421,966 1,322,299 1,033,264 216,393
Maximum exposures per source 173 170 155 140 140 103 69
Maximum observations per source 77 77 70 65 65 40 23
Maximum on-time per source 2.8 Ms 2.8 Ms 2.8 Ms 2.8 Ms 2.8 Ms 1.9 Ms 1.3 Ms
Catalog Bibcode
2020A&A...641A.137TReferences
Traulsen et al. (2020), "The XMM-Newton serendipitous survey. X: The second source catalogue from overlapping XMM-Newton observations and its long-term variable content", <A&A, 641, A137 (2020)> (2020A&A...641A.137T) Traulsen et al. (2019), "The XMM-Newton serendipitous survey. VIII: The first XMM-Newton serendipitous source catalogue from overlapping observations", <A&A, 624, A77 (2019)> (2019A&A...624A..77T)Users of the catalog are kindly asked to reference the above paper, Traulsen+ 2020 (A&A 641, A137), and to include the following policy statement in their work: "This research has made use of data obtained from the 4XMM XMM-Newton serendipitous stacked source catalogue 4XMM-DR14s compiled by the institutes of the XMM-Newton Survey Science Centre selected by ESA."
Provenance
This database table was last updated by the HEASARC in July 2024. It contains the 4XMM-DR14s source catalog, released by ESA on 2024-07-09 and obtained from the XMM-Newton Survey Science Center Consortium at https://xmmssc.aip.de/cms/catalogues/4xmm-dr14s/. It is also available as a gzipped FITS file.Parameters
Name
The source designation in the style of the 4XMM IAU names. The prefix on each
of the names ends with an "s" to signify it is a stacked source.
SrcID
The unique identifier assigned to the source detection.
N_Obs
The number of observations involved in the stack.
N_Contrib
The number of observations with which the source was fitted.
N_Exp
The number of exposures covering the source.
N_Exp_Sdet
The number of exposures used in source detection.
N_Exp_Phot
The number of exposures used for PSF photometry.
RA
The Right Ascension of the source in the specified equinox. The position of
the source is the result of the simultaneous fit and considered to be the
same for the stack and associated individual observations (in
XMMSTACKOB).
Dec
The Declination of the source in the specified equinox. The position of the
source is the result of the simultaneous fit and considered to be the same
for the stack and associated individual observations (in
XMMSTACKOB).
LII
Galactic Longitude. The position of the source is the result of the
simultaneous fit and considered to be the same for the stack and associated
individual observations (in XMMSTACKOB).
BII
Galactic Latitude. The position of the source is the result of the
simultaneous fit and considered to be the same for the stack and associated
individual observations (in XMMSTACKOB).
Error_Radius
Square root of the squared sum of the 1-sigma uncertainties in the Right
Ascension and Declination, in arcseconds. The combined position error,
ERROR_RADIUS, is calculated from the errors of the image coordinates:
sqrt(X_PIXEL_ERROR2+Y_PIXEL_ERROR2). For symmetric errors in both
dimensions, ERROR_RADIUS/sqrt(2) is the one-dimensional 1-sigma position
uncertainty, giving the coordinate interval that includes 68% of normally
distributed data points, and sqrt(2.3/2)*ERROR_RADIUS is the two-dimensional
error, giving the radius of a circularized ellipse that include 68% of
normally distributed data points.
X_Pixel
X coordinate within the rebinned image. The position of the source is the
result of the simultaneous fit and considered to be the same for the stack
and associated individual observations (in
XMMSTACKOB).
X_Pixel_Error
1-sigma uncertainty in X coordinate within the rebinned image. The position
error of the source is the result of the simultaneous fit and considered to
be the same for the stack and associated individual observations (in
XMMSTACKOB).
Y_Pixel
Y coordinate within the rebinned image. The position of the source is the
result of the simultaneous fit and considered to be the same for the stack
and associated individual observations (in
XMMSTACKOB).
Y_Pixel_Error
1-sigma uncertainty in Y coordinate within the rebinned image. The position
error of the source is the result of the simultaneous fit and considered to
be the same for the stack and associated individual observations (in
XMMSTACKOB).
Dist_NN
The distance to the nearest neighboring detection, in arcseconds.
N_Blend
The number of simultaneously fitted sources.
Name_Detcat
The IAU source designation assigned to the nearest unique source in 4XMM-DR14.
Srcid_Detcat
The unique source identifier of the nearest source in 4XMM-DR14 within the
correlation radius. Two sources are associated if their separation is no
larger than three times the sum of their position errors, which is assumed to
be at least one arcsecond to account for systematic errors. The matching
radius per source is therefore:
rmatch = max (1", 3 x [ ERROR_RADIUS + ERROR_RADIUS_DETCAT ])
A null value refers to the case where no counterpart is found.
RA_Detcat
The mean right ascension of the 4XMM-DR14 source and its contributing
detections after field rectifications.
Dec_Detcat
The mean declination of the 4XMM-DR14 source and its contributing detections
after field rectifications.
Error_Radius_Detcat
The position error of the 4XMM-DR14 source and its contributing detections
including statistical and systematic errors from the field rectifications.
Dist_Detcat
The distance between the stacked source and the nearest unique source in
4XMM-DR14, in arcsec.
Ndetect_Detcat
The number of DR14 detections of the nearest unique source in 4XMM-DR14.
EP_Flux
The weighted mean of the all-EPIC flux between 0.2 - 12.0 keV, in units of
erg/s/cm2. This is the dead-time corrected count rates in the entire PSF,
multiplied with the respective energy conversion factors (see Mateos et al.,
2009, A&A, 496, 879). If the exposure is zero, for example on chip gaps, or
if the covered PSF fraction is below 15%, this is set to "Null".
EP_Flux_Error
1-sigma uncertainty in weighted mean of the all-EPIC flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
EP_1_Flux
The weighted mean of the EPIC band 1 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
EP_1_Flux_Error
1-sigma uncertainty in weighted mean of the EPIC band 1 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
EP_2_Flux
The weighted mean of the EPIC band 2 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
EP_2_Flux_Error
1-sigma uncertainty in the weighted mean of the EPIC band 2 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
EP_3_Flux
The weighted mean of the EPIC band 3 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
EP_3_Flux_Error
1-sigma uncertainty in weighted mean of the EPIC band 3 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
EP_4_Flux
The weighted mean of the EPIC band 4 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
EP_4_Flux_Error
1-sigma uncertainty in weighted mean of the EPIC band 4 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
EP_5_Flux
The weighted mean of the EPIC band 5 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
EP_5_Flux_Error
1-sigma uncertainty in weighted mean of the EPIC band 5 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
PN_Flux
The weighted mean of the total (over all energy bands) PN flux, in units of
erg/s/cm2. A zero value with a non-zero error refers to case where no
counts are detected in spite of sufficient PSF coverage. A null value means
that the exposure is zero or the covered PSF fraction is below 15%.
PN_Flux_Error
1-sigma uncertainty in weighted mean of the total (over all energy bands) PN
flux, in units of erg/s/cm2. A null value means that the exposure is zero or
the covered PSF fraction is below 15%.
PN_1_Flux
The weighted mean of the PN band 1 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
PN_1_Flux_Error
1-sigma uncertainty in weighted mean of the PN band 1 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
PN_2_Flux
The weighted mean of the PN band 2 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
PN_2_Flux_Error
1-sigma uncertainty in the weighted mean of the PN band 2 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
PN_3_Flux
The weighted mean of the PN band 3 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
PN_3_Flux_Error
1-sigma uncertainty in the weighted mean of the PN band 3 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
PN_4_Flux
The weighted mean of the PN band 4 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
PN_4_Flux_Error
1-sigma uncertainty in the weighted mean of the PN band 4 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
PN_5_Flux
The weighted mean of the PN band 5 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
PN_5_Flux_Error
1-sigma uncertainty in weighted mean of the PN band 5 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_Flux
The weighted mean of the total (over all energy bands) MOS1 flux, in units of
erg/s/cm2. A zero value with a non-zero error refers to case where no
counts are detected in spite of sufficient PSF coverage. A null value means
that the exposure is zero or the covered PSF fraction is below 15%.
M1_Flux_Error
1-sigma uncertainty in the weighted mean of the total (over all energy bands)
MOS1 flux, in units of erg/s/cm2. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M1_1_Flux
The weighted mean of the MOS1 band 1 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M1_1_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS1 band 1 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_2_Flux
The weighted mean of the MOS1 band 2 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M1_2_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS1 band 2 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_3_Flux
The weighted mean of the MOS1 band 3 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M1_3_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS1 band 3 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_4_Flux
The weighted mean of the MOS1 band 4 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M1_4_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS1 band 4 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_5_Flux
The weighted mean of the MOS1 band 5 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M1_5_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS1 band 5 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_Flux
The weighted mean of the total (over all energy bands) MOS2 flux, in units of
erg/s/cm2. A zero value with a non-zero error refers to case where no
counts are detected in spite of sufficient PSF coverage. A null value means
that the exposure is zero or the covered PSF fraction is below 15%.
M2_Flux_Error
1-sigma uncertainty in the weighted mean of the total (sum of energy bands)
MOS2 flux, in units of erg/s/cm2. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M2_1_Flux
The weighted mean of the MOS2 band 1 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M2_1_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS2 band 1 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_2_Flux
The weighted mean of the MOS2 band 2 flux, in units of erg/s/cm2x. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M2_2_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS2 band 2 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_3_Flux
The weighted mean of the MOS2 band 3 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M2_3_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS2 band 3 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_4_Flux
The weighted mean of the MOS2 band 4 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M2_4_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS2 band 4 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_5_Flux
The weighted mean of the MOS2 band 5 flux, in units of erg/s/cm2. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M2_5_Flux_Error
1-sigma uncertainty in the weighted mean of the MOS2 band 5 flux, in units of
erg/s/cm2. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
EP_Rate
The all-EPIC count rate between 0.2 and 12.0 keV background-subtracted and
vignetting-corrected in the entire PSF. This is the exposure-weighted mean of
the count rates of the individual observations. A zero value with a non-zero
error refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
EP_Rate_Error
1-sigma uncertainty in the all-EPIC count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
PN_Rate
The total (over all energy bands) PN count rate. This is calculated from the
exposure-weighted mean of the individual observations. A zero value with a
non-zero error refers to case where no counts are detected in spite of
sufficient PSF coverage. A null value means that the exposure is zero or the
covered PSF fraction is below 15%.
PN_Rate_Error
1-sigma uncertainty in the total (sum of energy bands) PN count rate. A null
value means that the exposure is zero or the covered PSF fraction is below 15%.
PN_1_Rate
PN band 1 count rate. This is calculated from the exposure-weighted mean of
the individual observations. A zero value with a non-zero error refers to
case where no counts are detected in spite of sufficient PSF coverage. A null
value means that the exposure is zero or the covered PSF fraction is below 15%.
PN_1_Rate_Error
1-sigma uncertainty in the PN band 1 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
PN_2_Rate
PN band 2 count rate. This is calculated from the exposure-weighted mean of
the individual observations. A zero value with a non-zero error refers to
case where no counts are detected in spite of sufficient PSF coverage. A null
value means that the exposure is zero or the covered PSF fraction is below
15%.
PN_2_Rate_Error
1-sigma uncertainty in the PN band 2 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
PN_3_Rate
PN band 3 count rate. This is calculated from the exposure-weighted mean of
the individual observations. A zero value with a non-zero error refers to
case where no counts are detected in spite of sufficient PSF coverage. A null
value means that the exposure is zero or the covered PSF fraction is below
15%.
PN_3_Rate_Error
1-sigma uncertainty in the PN band 3 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
PN_4_Rate
PN band 4 count rate. This is calculated from the exposure-weighted mean of
the individual observations. A zero value with a non-zero error refers to
case where no counts are detected in spite of sufficient PSF coverage. A null
value means that the exposure is zero or the covered PSF fraction is below
15%.
PN_4_Rate_Error
1-sigma uncertainty in the PN band 4 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
PN_5_Rate
PN band 5 count rate. This is calculated from the exposure-weighted mean of
the individual observations. A zero value with a non-zero error refers to
case where no counts are detected in spite of sufficient PSF coverage. A null
value means that the exposure is zero or the covered PSF fraction is below
15%.
PN_5_Rate_Error
1-sigma uncertainty in the PN band 5 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M1_Rate
The total (over all energy bands) MOS1 count rate. This is calculated from
the exposure-weighted mean of the individual observations. A zero value with
a non-zero error refers to case where no counts are detected in spite of
sufficient PSF coverage. A null value means that the exposure is zero or the
covered PSF fraction is below 15%.
M1_Rate_Error
1-sigma uncertainty in the total MOS1 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M1_1_Rate
The MOS1 band 1 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_1_Rate_Error
1-sigma uncertainty in MOS1 band 1 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M1_2_Rate
The MOS1 band 2 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_2_Rate_Error
1-sigma uncertainty in MOS1 band 2 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M1_3_Rate
The MOS1 band 3 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_3_Rate_Error
1-sigma uncertainty in MOS1 band 3 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M1_4_Rate
The MOS1 band 4 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_4_Rate_Error
1-sigma uncertainty in MOS1 band 4 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M1_5_Rate
The MOS1 band 5 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M1_5_Rate_Error
1-sigma uncertainty in MOS1 band 5 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M2_Rate
The total (over all energy bands) MOS2 count rate. This is calculated from
the exposure-weighted mean of the individual observations. A zero value with
a non-zero error refers to case where no counts are detected in spite of
sufficient PSF coverage. A null value means that the exposure is zero or the
covered PSF fraction is below 15%.
M2_Rate_Error
1-sigma uncertainty in the total MOS2 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M2_1_Rate
The MOS2 band 1 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_1_Rate_Error
1-sigma uncertainty in MOS2 band 1 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M2_2_Rate
The MOS2 band 2 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_2_Rate_Error
1-sigma uncertainty in MOS2 band 2 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M2_3_Rate
The MOS2 band 3 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_3_Rate_Error
1-sigma uncertainty in MOS2 band 3 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M2_4_Rate
The MOS2 band 4 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_4_Rate_Error
1-sigma uncertainty in MOS2 band 4 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
M2_5_Rate
The MOS2 band 5 count rate. This is calculated from the exposure-weighted
mean of the individual observations. A zero value with a non-zero error
refers to case where no counts are detected in spite of sufficient PSF
coverage. A null value means that the exposure is zero or the covered PSF
fraction is below 15%.
M2_5_Rate_Error
1-sigma uncertainty in MOS2 band 5 count rate. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
EP_Cts
The all-EPIC background-subtracted source counts in the entire PSF. A null
value means that the exposure is zero or the covered PSF fraction is below 15%.
EP_Cts_Error
1-sigma uncertainty in the all-EPIC count number. A null value means that the
exposure is zero or the covered PSF fraction is below 15%.
PN_Cts
The total (over all energy bands) PN background-subtracted source counts in
the entire PSF. A zero value with a non-zero error refers to case where no
counts are detected in spite of sufficient PSF coverage. A null value means
that the exposure is zero or the covered PSF fraction is below 15%.
PN_Cts_Error
1-sigma uncertainty in the total (over all energy bands) PN count number.
A null value means that the exposure is zero or the covered PSF fraction is
below 15%.
M1_Cts
The total MOS1 background-subtracted source counts in the entire PSF. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M1_Cts_Error
1-sigma uncertainty in the total MOS1 count number. A null value means that
the exposure is zero or the covered PSF fraction is below 15%.
M2_Cts
The total MOS2 background-subtracted source counts in the entire PSF. A zero
value with a non-zero error refers to case where no counts are detected in
spite of sufficient PSF coverage. A null value means that the exposure is
zero or the covered PSF fraction is below 15%.
M2_Cts_Error
1-sigma uncertainty in the total MOS2 count number. A null value means that
the exposure is zero or the covered PSF fraction is below 15%.
EP_Det_ML
The total EPIC equivalent maximum detection likelihood, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask.
PN_Det_ML
The total PN equivalent maximum detection likelihood, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the PN instrument.
PN_1_Det_ML
The equivalent maximum detection likelihood for PN band 1, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the PN instrument and
energy band 1.
PN_2_Det_ML
The equivalent maximum detection likelihood for PN band 2, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the PN instrument and
energy band 2.
PN_3_Det_ML
The equivalent maximum detection likelihood for PN band 3, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the PN instrument and
energy band 3.
PN_4_Det_ML
The equivalent maximum detection likelihood for PN band 4, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the PN instrument and
energy band 4.
PN_5_Det_ML
The equivalent maximum detection likelihood for PN band 5, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the PN instrument and
energy band 5.
M1_Det_ML
The total MOS1 equivalent maximum detection likelihood, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the MOS1 instrument.
M1_1_Det_ML
The equivalent maximum detection likelihood for MOS1 band 1, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS1
instrument and energy band 1.
M1_2_Det_ML
The equivalent maximum detection likelihood for MOS1 band 2, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS1
instrument and energy band 2.
M1_3_Det_ML
The equivalent maximum detection likelihood for MOS1 band 3, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS1
instrument and energy band 3.
M1_4_Det_ML
The equivalent maximum detection likelihood for MOS1 band 4, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS1
instrument and energy band 4.
M1_5_Det_ML
The equivalent maximum detection likelihood for MOS1 band 5, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS1
instrument and energy band 5.
M2_Det_ML
The total MOS2 equivalent maximum detection likelihood, normalized to two
degrees of freedom. This is calculated from all the valid contributing images
for which the source is inside the detection mask for the MOS2 instrument.
M2_1_Det_ML
The equivalent maximum detection likelihood for MOS2 band 1, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS2
instrument and energy band 1.
M2_2_Det_ML
The equivalent maximum detection likelihood for MOS2 band 2, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS2
instrument and energy band 2.
M2_3_Det_ML
The equivalent maximum detection likelihood for MOS2 band 3, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS2
instrument and energy band 3.
M2_4_Det_ML
The equivalent maximum detection likelihood for MOS2 band 4, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS2
instrument and energy band 4.
M2_5_Det_ML
The equivalent maximum detection likelihood for MOS2 band 5, normalized to
two degrees of freedom. This is calculated from all the valid contributing
images for which the source is inside the detection mask for the MOS2
instrument and energy band 5.
Extent
The source extent radius, in arcseconds, derived from the model source PSF
convolved with a Beta profile. Below an extent of 6 arcsec, the source is
considered unresolved and set to zero and the source is "point-like".
Extent_Error
1-sigma uncertainty in the source extent radius, in arcseconds. This is set
to "Null", if the extent is below 6 arcsec.
Extent_ML
The likelihood that the source is extended with radius EXTENT. This is set to
"Null" for a point-like source, i.e., if the extent is below 6 arcsec.
EP_HR1
Equivalent all-EPIC hardness ratio 1 (HR1). This is based on the mean of all
active instruments. The hardness ratio is defined as the ratio of the two
bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
EP_HR1_Error
1-sigma uncertainty in the all-EPIC hardness ratio 1.
EP_HR2
Equivalent all-EPIC hardness ratio 2 (HR2). This is based on the mean of all
active instruments. The hardness ratio is defined as the ratio of the two
bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
EP_HR2_Error
1-sigma uncertainty in the all-EPIC hardness ratio 2.
EP_HR3
Equivalent all-EPIC hardness ratio 3 (HR3). This is based on the mean of all
active instruments. The hardness ratio is defined as the ratio of the two
bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
EP_HR3_Error
1-sigma uncertainty in the all-EPIC hardness ratio 3.
EP_HR4
Equivalent all-EPIC hardness ratio 4 (HR4). This is based on the mean of all
active instruments. The hardness ratio is defined as the ratio of the two
bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
EP_HR4_Error
1-sigma uncertainty in the all-EPIC hardness ratio 4.
PN_HR1
PN hardness ratio 1 (HR1). This is based on the mean of the observations. The
hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
PN_HR1_Error
1-sigma uncertainty in PN hardness ratio 1.
PN_HR2
PN hardness ratio 2 (HR2). This is based on the mean of the observations. The
hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
PN_HR2_Error
1-sigma uncertainty in PN hardness ratio 2.
PN_HR3
PN hardness ratio 3 (HR3). This is based on the mean of the observations. The
hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
PN_HR3_Error
1-sigma uncertainty in PN hardness ratio 3.
PN_HR4
PN hardness ratio 4 (HR4). This is based on the mean of the observations. The
hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
PN_HR4_Error
1-sigma uncertainty in PN hardness ratio 4.
M1_HR1
The MOS1 hardness ratio 1 (HR1). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M1_HR1_Error
1-sigma uncertainty in MOS1 hardness ratio 1.
M1_HR2
The MOS1 hardness ratio 2 (HR2). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M1_HR2_Error
1-sigma uncertainty in MOS1 hardness ratio 2.
M1_HR3
The MOS1 hardness ratio 3 (HR3). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M1_HR3_Error
1-sigma uncertainty in MOS1 hardness ratio 3.
M1_HR4
The MOS1 hardness ratio 4 (HR4). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M1_HR4_Error
1-sigma uncertainty in MOS1 hardness ratio 4.
M2_HR1
The MOS2 hardness ratio 1 (HR1). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M2_HR1_Error
1-sigma uncertainty in MOS2 hardness ratio 1.
M2_HR2
The MOS2 hardness ratio 2 (HR2). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M2_HR2_Error
1-sigma uncertainty in MOS2 hardness ratio 2.
M2_HR3
The MOS2 hardness ratio 3 (HR3). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M2_HR3_Error
1-sigma uncertainty in MOS2 hardness ratio 3.
M2_HR4
MOS2 hardness ratio 4 (HR4). This is based on the mean of the observations.
The hardness ratio is defined as the ratio of the two bands, H and S, as:
HR=(H-S)/(H+S)
HR1: bands 2 and 1
HR2: bands 3 and 2
HR3: bands 4 and 3
HR4: bands 5 and 4
M2_HR4_Error
1-sigma uncertainty in MOS2 hardness ratio 4.
PN_Exposure
The total PN exposure map values (including vignetting effects) summed for
all contributing images.
PN_1_Exposure
The total PN band 1 exposure map values (including vignetting effects) summed
for all contributing images.
PN_2_Exposure
The total PN band 2 exposure map values (including vignetting effects) summed
for all contributing images.
PN_3_Exposure
The total PN band 3 exposure map values (including vignetting effects) summed
for all contributing images.
PN_4_Exposure
The total PN band 4 exposure map values (including vignetting effects) summed
for all contributing images.
PN_5_Exposure
The total PN band 5 exposure map values (including vignetting effects) summed
for all contributing images.
M1_Exposure
The total MOS1 exposure map values (including vignetting effects) summed for
all contributing images.
M1_1_Exposure
The total MOS1 band 1 exposure map values (including vignetting effects)
summed for all contributing images.
M1_2_Exposure
The total MOS1 band 2 exposure map values (including vignetting effects)
summed for all contributing images.
M1_3_Exposure
The total MOS1 band 3 exposure map values (including vignetting effects)
summed for all contributing images.
M1_4_Exposure
The total MOS1 band 4 exposure map values (including vignetting effects)
summed for all contributing images.
M1_5_Exposure
The total MOS1 band 5 exposure map values (including vignetting effects)
summed for all contributing images.
M2_Exposure
The total MOS2 exposure map values (including vignetting effects) summed for
all contributing images.
M2_1_Exposure
The total MOS2 band 1 exposure map values (including vignetting effects)
summed for all contributing images.
M2_2_Exposure
The total MOS2 band 2 exposure map values (including vignetting effects)
summed for all contributing images.
M2_3_Exposure
The total MOS2 band 3 exposure map values (including vignetting effects)
summed for all contributing images.
M2_4_Exposure
The total MOS2 band 4 exposure map values (including vignetting effects)
summed for all contributing images.
M2_5_Exposure
The total MOS2 band 5 exposure map values (including vignetting effects)
summed for all contributing images.
PN_Bg
The total PN background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
PN_1_Bg
PN band 1 background model at the central position of the source on the CCD
summed for all contributing images. This is set to "Null" if the exposure map
is zero and if the center of the source is located on a bad chip area.
PN_2_Bg
PN band 2 background model at the central position of the source on the CCD
summed for all contributing images. This is set to "Null" if the exposure map
is zero and if the center of the source is located on a bad chip area.
PN_3_Bg
PN band 3 background model at the central position of the source on the CCD
summed for all contributing images. This is set to "Null" if the exposure map
is zero and if the center of the source is located on a bad chip area.
PN_4_Bg
PN band 4 background model at the central position of the source on the CCD
summed for all contributing images. This is set to "Null" if the exposure map
is zero and if the center of the source is located on a bad chip area.
PN_5_Bg
PN band 5 background model at the central position of the source on the CCD
summed for all contributing images. This is set to "Null" if the exposure map
is zero and if the center of the source is located on a bad chip area.
M1_Bg
The total MOS1 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M1_1_Bg
The MOS1 band 1 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M1_2_Bg
The MOS1 band 2 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M1_3_Bg
The MOS1 band 3 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M1_4_Bg
The MOS1 band 4 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M1_5_Bg
The MOS1 band 5 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M2_Bg
The total MOS2 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M2_1_Bg
The MOS2 band 1 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M2_2_Bg
The MOS2 band 2 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M2_3_Bg
The MOS2 band 3 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M2_4_Bg
The MOS2 band 4 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
M2_5_Bg
The MOS2 band 5 background model at the central position of the source on the
CCD summed for all contributing images. This is set to "Null" if the exposure
map is zero and if the center of the source is located on a bad chip area.
EP_Ontime
The total all-EPIC good exposure time, in seconds, at the central position of
the source on the CCD. This is the sum of the maximum on-times of all the
observations and set to zero if the center of the source is located on a bad
chip area.
PN_Ontime
The total PN good exposure time, in seconds, at the central position of the
source. The times are calculated by the SAS task evselect and are not
vignetting corrected. This is the sum of the PN values and set to zero if the
center of the source is location on a bad chip area.
M1_Ontime
The total MOS1 good exposure time, in seconds, at the central position of the
source. The times are calculated by the SAS task evselect and are not
vignetting corrected. This is the sum of the MOS1 values and set to zero if
the center of the source is location on a bad chip area.
M2_Ontime
The total MOS2 good exposure time, in seconds, at the central position of the
source. The times are calculated by the SAS task evselect and are not
vignetting corrected. This is the sum of the MOS2 values and set to zero if
the center of the source is location on a bad chip area.
PN_Pileup
The estimate of the pile-up level in EPIC/pn. A value below 1 corresponds to
negligible pile-up (less than a few % flux loss) while values larger than 10
denote heavy pile-up.
M1_Pileup
The estimate of the pile-up level in EPIC/MOS1. A value below 1 corresponds to
negligible pile-up (less than a few % flux loss) while values larger than 10
denote heavy pile-up.
M2_Pileup
The estimate of the pile-up level in EPIC/MOS2. A value below 1 corresponds to
negligible pile-up (less than a few % flux loss) while values larger than 10
denote heavy pile-up.
PN_Maskfrac
The maximum mean chip coverage in the PN detection mask, weighted by the
source PSF.
M1_Maskfrac
The maximum mean chip coverage in the MOS1 detection mask, weighted by the
source PSF.
M2_Maskfrac
The maximum mean chip coverage in the MOS2 detection mask, weighted by the
source PSF.
Dist_Ref
The distance to the reference coordinates of the field, in arcminutes.
Overlap_Flag
A flag which indicates whether or not the source is located in an area in
which several observations overlap.
Sdetqual_Flag
A flag which indicates whether or not the source was detected in a (chip)
region of reasonable detection quality ("T" for true) or of poor quality ("F"
for false).
Stack_Flag
The summarized numeric quality flag of the detection, as follows:
-1 = same as 1
0 = all flags are false
1 = at least one of the flags 1, 2, 3, 9 is true
2 = at least one of the flags 4-8 is true, potentially a spurious source
3 = STACK_FLAG is 2 in all contributing observations
10 = no automatic flag but marked as probably spurious based on visual screening
11 = at least one of the flags 1, 2, 3, 9 is true, based on automated flag, and was also marked as probably spurious based on visual screening
12 = at least one of the flags 4-8 is true, based on automated flag, and was also marked as probably spurious based on visual screening
13 = STACK_FLAG is 2 in all contributing observations, based on automated flag, and was also marked as probably spurious based on visual screening
For more details about the quality flags, refer to Section 7.3 in Watson
et al. (2009, A&A, 493, 339).
EP_Flag
The quality flags of the EPIC detection, combined into a 10-character string
(refer to Watson et al., 2009, A&A, 493, 339). This used the worst flag of
all observations. A "true" flag means a warning on the detection condition.
PN_Flag
The quality flags of the PN detection, combined into a 9-character string
(refer to Watson et al., 2009, A&A, 493, 339). This used the worst flag of
all observations. A "true" flag means a warning on the detection condition.
M1_Flag
The quality flags of the MOS1 detection, combined into a 9-character string
(refer to Watson et al., 2009, A&A, 493, 339). This used the worst flag of
all observations. A "true" flag means a warning on the detection condition.
M2_Flag
The quality flags of the MOS2 detection, combined into a 9-character
string(refer to Watson et al., 2009, A&A, 493, 339). This used the worst flag
of all observations. A "true" flag means a warning on the detection
condition.
Var_Chi2
The reduced chi2 of the inter-observation flux variability in all
contributing observations with valid non-zero fluxes.
Var_Chi2_1
The reduced chi2 of the inter-observation flux variability in energy band 1.
Var_Chi2_2
The reduced chi2 of the inter-observation flux variability in energy band 2.
Var_Chi2_3
The reduced chi2 of the inter-observation flux variability in energy band 3.
Var_Chi2_4
The reduced chi2 of the inter-observation flux variability in energy band 4.
Var_Chi2_5
The reduced chi2 of the inter-observation flux variability in energy band 5.
Var_Prob
The probability that fluxes are consistent with constant inter-observation
flux. This is derived from VAR_CHI2. The smaller VAR_PROB is, the more likely
the sources shows inter-observation flux variability.
Var_Prob_1
The probability that fluxes are constant in energy band 1. This is derived
from VAR_CHI2_1. The smaller VAR_PROB is, the more likely the sources shows
inter-observation flux variability.
Var_Prob_2
The probability that fluxes are constant in energy band 2. This is derived
from VAR_CHI2_2. The smaller VAR_PROB is, the more likely the sources shows
inter-observation flux variability.
Var_Prob_3
The probability that fluxes are constant in energy band 3. This is derived
from VAR_CHI2_3. The smaller VAR_PROB is, the more likely the sources shows
inter-observation flux variability.
Var_Prob_4
The probability that fluxes are constant in energy band 4. This is derived
from VAR_CHI2_4. The smaller VAR_PROB is, the more likely the sources shows
inter-observation flux variability.
Var_Prob_5
The probability that fluxes are constant in energy band 5. This is derived
from VAR_CHI2_5. The smaller VAR_PROB is, the more likely the sources shows
inter-observation flux variability.
FRatio
The ratio between the highest and the lowest (non-zero, non-null) mean flux.
FRatio_Error
The 1-sigma uncertainty in the flux ratio.
FRatio_1
The ratio between the highest and the lowest mean flux in energy band 1.
FRatio_1_Error
The 1-sigma uncertainty in the flux ratio for energy band 1.
FRatio_2
The ratio between the highest and the lowest mean flux in energy band 2.
FRatio_2_Error
The 1-sigma uncertainty in the flux ratio for energy band 2.
FRatio_3
The ratio between the highest and the lowest mean flux in energy band 3.
FRatio_3_Error
The 1-sigma uncertainty in the flux ratio for energy band 3.
FRatio_4
The ratio between the highest and the lowest mean flux in energy band 4.
FRatio_4_Error
The 1-sigma uncertainty in the flux ratio for energy band 4.
FRatio_5
The ratio between the highest and the lowest mean flux in energy band 5.
FRatio_5_Error
The 1-sigma uncertainty in the flux ratio for energy band 5.
FluxVar
The largest difference between the mean all-EPIC fluxes.
FluxVar_1
The largest difference between the mean all-EPIC fluxes in energy band 1.
FluxVar_2
The largest difference between the mean all-EPIC fluxes in energy band 2.
FluxVar_3
The largest difference between the mean all-EPIC fluxes in energy band 3.
FluxVar_4
The largest difference between the mean all-EPIC fluxes in energy band 4.
FluxVar_5
The largest difference between the mean all-EPIC fluxes in energy band 5.
Amplvar
The maximum variability amplitude, in sigma.
Amplvar_1
The maximum band 1 variability amplitude, in sigma.
Amplvar_2
The maximum band 2 variability amplitude, in sigma.
Amplvar_3
The maximum band 3 variability amplitude, in sigma.
Amplvar_4
The maximum band 4 variability amplitude, in sigma.
Amplvar_5
The maximum band 5 variability amplitude, in sigma.
Fbr_Var_Chi2_21
The reduced chi2 of EPIC band 2 to 1 inter-observation variability.
Fbr_Var_Chi2_32
The reduced chi2 of EPIC band 3 to 2 inter-observation variability.
Fbr_Var_Chi2_31
The reduced chi2 of EPIC band 3 to 1 inter-observation variability.
Fbr_Var_Chi2_43
The reduced chi2 of EPIC band 4 to 3 inter-observation variability.
Fbr_Var_Chi2_42
The reduced chi2 of EPIC band 4 to 2 inter-observation variability.
Fbr_Var_Chi2_41
The reduced chi2 of EPIC band 4 to 1 inter-observation variability.
Fbr_Var_Chi2_54
The reduced chi2 of EPIC band 5 to 4 inter-observation variability.
Fbr_Var_Chi2_53
The reduced chi2 of EPIC band 5 to 3 inter-observation variability.
Fbr_Var_Chi2_52
The reduced chi2 of EPIC band 5 to 2 inter-observation variability.
Fbr_Var_Chi2_51
The reduced chi2 of EPIC band 5 to 1 inter-observation variability.
Fbr_Var_Prob_21
The probability that the band 2 to 1 flux variability is consistent with zero.
Fbr_Var_Prob_32
The probability that the band 3 to 2 flux variability is consistent with zero.
Fbr_Var_Prob_31
The probability that the band 3 to 1 flux variability is consistent with zero.
Fbr_Var_Prob_43
The probability that the band 4 to 3 flux variability is consistent with zero.
Fbr_Var_Prob_42
The probability that the band 4 to 2 flux variability is consistent with zero.
Fbr_Var_Prob_41
The probability that the band 4 to 1 flux variability is consistent with zero.
Fbr_Var_Prob_54
The probability that the band 5 to 4 flux variability is consistent with zero.
Fbr_Var_Prob_53
The probability that the band 5 to 3 flux variability is consistent with zero.
Fbr_Var_Prob_52
The probability that the band 5 to 2 flux variability is consistent with zero.
Fbr_Var_Prob_51
The probability that the band 5 to 1 flux variability is consistent with zero.
Fbr_Var_Dsig_21
The largest difference of EPIC band 2 to 1 flux ratios.
Fbr_Var_Dsig_32
The largest difference of EPIC band 3 to 2 flux ratios.
Fbr_Var_Dsig_31
The largest difference of EPIC band 3 to 1 flux ratios.
Fbr_Var_Dsig_43
The largest difference of EPIC band 4 to 3 flux ratios.
Fbr_Var_Dsig_42
The largest difference of EPIC band 4 to 2 flux ratios.
Fbr_Var_Dsig_41
The largest difference of EPIC band 4 to 1 flux ratios.
Fbr_Var_Dsig_54
The largest difference of EPIC band 5 to 4 flux ratios.
Fbr_Var_Dsig_53
The largest difference of EPIC band 5 to 3 flux ratios.
Fbr_Var_Dsig_52
The largest difference of EPIC band 5 to 2 flux ratios.
Fbr_Var_Dsig_51
The largest difference of EPIC band 5 to 1 flux ratios.
Chi2prob_Detcat
The EPIC chi2 probability for constant flux of nearest 4XMM-DR14 source
(the minimum of all contributing 4XMM-DR14 observations).
Fvar_Detcat
The fractional variance of the nearest source in 4XMM-DR14 using the
observation with minimum CHI2PROB.
Fvar_Detcat_Error
The 1-sigma uncertainty in the fractional variance.
Var_Flag_Detcat
The variability flag of the nearest unique source in 4XMM-DR14 using the
observation with minimum CHI2PROB. If at least one exposure has CHI2PROB
below 10-5, then the flag is set to "true."
Sum_Flag_Detcat
The mean source summary quality flag for the nearest unique source in
4XMM-DR14, based on automatic and visual screening.
Sum_Flag_Min_Detcat
The best quality flag of the detections for the nearest 4XMM-DR14 source.
Obs_First
The date/time of the first contributing observation.
Obs_Last
The date/time of the last contributing observation.
URL_Detcat
This contains the URL of the web page with more information on the nearest
unique source in 4XMM-DR14.
Contact Person
Questions regarding the XMMSTACK database table can be addressed to the HEASARC Help Desk.Page Author: Browse Software Development Team
Last Modified: Monday, 16-Sep-2024 17:37:28 EDT
- HEASARC Director: Dr. Andy Ptak
- NASA Official: Dr. Andy Ptak
- Web Curator: J.D. Myers
- Last Modified: 16-Sep-2024