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ROSPSPCF - ROSAT Results Archive Sources for the PSPC with Filter |
HEASARC Archive |
Overview
This table is derived from the Second ROSAT Source Catalog of Pointed Observations with the ROSAT PSPC (Roentgen Satellite Position-Sensitive Proportional Counter) Observed Using the Boron Filter, or the 2RXF Catalog. 2XRF contains arcsecond positions and count rates for 2,526 detected sources from 258 ROSAT PSPC Filter observations covering 0.15% of the sky, including 704 high-confidence detections and 20 obvious sources which were not detected by SASS.The complete version of the list of detections (the HEASARC's ROSPSPCFTOT) table contains 2,526 entries, whereas the short 'high-confidence' version contained in this present table has 704 detection. The ROSPSPCF table excludes sources that meet the following parameter criteria: false_det = 'f' or deferred = 'D' or not_checked = 'n'. See the documentation below for descriptions of these parameters.
The catalog consists of all primary source parameters from the automated detection algorithm employed by the SASS. In addition each observation has been quality checked, both by automatic algorithms and by detailed visual inspection. The results of this quality checking are contained as a set of logical-value flags for a set of principal source parameters. If a source parameter is suspect, the associated flag is set to a corresponding alphabetical value; parameters with no obvious problems maintain the default, '.', value.
The Second ROSAT Pointed PSPC Filter Source Catalog includes missing sources, i.e. obvious sources which were not detected by the SASS source detection software but which could be easily detected by visual inspection. Missed sources are marked by negative values of their source identification number, i.e. the parameter 'MPLSX_ID' has a negative value for these sources. The only tabulated quantities for these visually identified missed sources are source positions; other quantities (like count rates, hardness ratios, etc.) are not available.
These data have been screened by ROSAT data centers in the US, Germany, and the UK as a step in the production of the ROSAT Results Archive. The RRA contains extracted source and associated products with an indication of reliability for the primary parameters.
More information about the ROSAT mission and the SASS can be obtained from the ROSAT User Handbook, available at
http://heasarc.gsfc.nasa.gov/docs/rosat/rosdocs.html
Catalog Bibcode
2000yCat.9030....0RReferences
The Second ROSAT Source Catalog of Pointed PSPC + Filter Observations
ROSAT Consortium
<ROSAT News 74, 09-Aug-2001 (2001)>
Provenance
This table was created by the HEASARC in May 2012 based on the file rospspcfcat-short.txt obtained from the MPE ROSAT Results Archive site (which is no longer available, unfortunately).Parameters
Sequence_Detection_Name
The ROSAT detection sequence number, e.g., '2rf500043n00.135' for the source
with the merged source list identification (the mplsx_id parameter) value of
135 from the observation with ROSAT seqid of rf500043n00, or
'2rf110133n00.999' for the source with mplsx_id = -1 from the observation
with ROSAT seqid of rf110133n00.
SeqID
The ROSAT sequence identification number (e.g. rf500043n00), where the prefix
is always 'RF' for a filtered PSPC pointed observation, and next 6 characters
are the ROSAT observation request sequence number or ROR, with the final 3
characters after the ROR number being the follow-on suffix containing the
index identifier.
Name
The 2RXF source designation, e.g., '2RXF J000548.1+285515', based on the
J2000.0 equatorial coordinates of the source.
RA
The Right Ascension of the source in the selected equinox. This was given in
J2000.0 decimal degrees to a precision of 10-4 degrees (0.36 arcseconds) in
the original table.
Dec
The Declination of the source in the selected equinox. This was given in
J2000.0 decimal degrees to a precision of 10-4 degrees (0.36 arcseconds) in
the original table.
LII
The Galactic Longitude of the source.
BII
The Galactic Latitude of the source.
Error_Radius
The uncertainty in the source position, in arcseconds.
Count_Rate
The estimated net count rate of the source in PHA channels 11
to 235 (0.1 - 2.4 keV) from either ML or MDETEC (if the mdet parameter has
a value of 'M'), in counts per second. (The ML algorithm was never run
for sources further than 20 arcminutes from the field center).
Count_Rate_Error
The uncertainty in the net count rate of the source,
in counts per second.
Md_Like
The source likelihood from the L/MDETEC algorithm, MD_LIKE.
If the value is >= 1000, it has been truncated to 999.9.
Off_Axis
The off-axis angle of the source averaged over the observation,
in arcminutes.
Exposure
The exposure time for the source, in seconds.
Vary
The source variability flag, with the possible values of
'NEGATIVE' (not variable), or 'POSSIBLE' for possible variable.
SrcFlags
This parameter contains a concise summary of the 13 source flag
values for the given source in the order given below (these values are
also given as individual parameters), where a '.' value means that the
flag is not set:
c=CONFUSED : close sources confused detection algorithm
d=DET_STRUCT : source near detector structure
e=EXTENDED : source is probably resolved
f=FALSE_DET : detection judged to be spurious
i=INTEN_SUSP : source intensity suspect
s=SPEC_SUSP : source spectrum suspect
l=LTC_SUSP : source lightcurve may be suspect
m=MULT_DET : complex emission split into individual sources
n=NOT_CHECKED : source not checked visually by operator
p=POS_SUSP : source position suspect
a=ASSOCIATED : another source nearby may influence derived source
v=VARFLG_SUSP : SASS variability flag suspect
w=WITHIN_EXT : source within extended emission
Confused
This flag parameter is set to 'c' to indicate that close sources
may have confused the detection algorithm.
Det_Struct
This flag parameter is set to 'd' to indicate that the source
is near a detector structure.
Extended
This flag parameter is set to 'e' to indicate that the source is
probably resolved.
False_Det
This flag parameter is set to 'f' to indicate that the detection
is judged to be spurious.
Inten_Susp
This flag parameter is set to 'i' to indicate that the source
intensity is suspect.
Spec_Susp
This flag parameter is set to 's' to indicate that the source
spectrum is suspect.
Ltc_Susp
This flag parameter is set to 'l' to indicate that the source
lightcurve is suspect.
Mult_Det
This flag parameter is set to 'm' to indicate that this is
complex emission split into individual sources.
Not_Checked
This flag parameter is set to 'n' to indicate that the source
was not checked visually by an operator.
Pos_Susp
This flag parameter is set to 'p' to indicate that the source
position is suspect.
Associated
This flag parameter is set to 'a' to indicate that another
source nearby may be influencing the derived source properties.
Varflg_Susp
This flag parameter is set to 'v' to indicate that the SASS
variability flag is suspect.
Within_Ext
This flag parameter is set to 'w' to indicate that the source is
within extended emission.
SeqFlags
This parameter contains a concise summary of the 8 sequence flag
values for the given source in the order given below (these values are
also given as individual parameters), where a '.' value means that the
flag is not set:
D=DEFERRED : Field not visually examined by operator [always off]
A=ASP_SUSP : Aspect solution suspect [always off]
B=BKG_SUSP : Background suspect
E=EXT_EMIS : Extended emission in field
F=FIELD_FDET : False detections in field
M=SRC_MISS : Sources in field missed
S=SLIS_MIS : Source list missing
X=EXPO_MAP : Exposure map is not correct
Deferred
This flag parameter is set to 'D' to indicate that the source
field was not visually examined by an operator (never set in this table).
Asp_Susp
This flag parameter is set to 'A' to indicate that the aspect
solution is suspect (never set in this table).
Bkg_Susp
This flag parameter is set to 'B' to indicate that the background
is suspect.
Ext_Emis
This flag parameter is set to 'E' to indicate that there is
extended emission in this field.
Field_Fdet
This flag parameter is set to 'F' to indicate that there are
false detections in this field.
Src_Miss
This flag parameter is set to 'M' to indicate that there are
source in this field which were missed.
Slis_Mis
This flag parameter is set to 'S' to indicate that no source list
was available.
Expo_Map
This flag parameter is set to 'X' to indicate that the exposure
map is incorrect.
QC_Date
The date that the sequence and source were checked.
QC_Site
The site of the sequence and source checking, e.g., GSFC, MPE or SAO.
QC_Name
The identification of the responsible quality checker.
Comments
Comments on the source: the only non-blank value is 'misse'
for sources that were missed by the SASS detection algorithm.
Begin_Date
The observation start date.
End_Date
The observation finish date.
ObsID
An alternate observation identifier, e.g., US400623H.N1.
Site
The data processing site, either 'MPE' or 'USRS'.
Im_X
The blocked X-position of the source, in pixels, where 1 pixel is
15 arcsecond by 15 arcseconds.
Im_Y
The blocked Y-position of the source, in pixels, where 1 pixel is
15 arcsecond by 15 arcseconds.
Im_X_Error
The error in the blocked X-position of the source, in pixels,
where 1 pixel is 15 arcsecond by 15 arcseconds.
Im_Y_Error
The error in the blocked Y-position of the source, in pixels,
where 1 pixel is 15 arcsecond by 15 arcseconds.
Ribdist
The corrected source-rib distance, in arcminutes.
Srcdist
The corrected source-nearest source distance, in arcminutes. (The
HEASARC notes that there are 31 detections with values of 999 much bigger than
the PSPC field of view, the significance of these values is not known.)
Vignetting
The vignetting factor V at the source position, i.e., the
number that the observed count rate C was divided by to give the corrected
net on-axis equivalent count rate N , i.e. N = C/V.
Background
The background count rate for the observation, in units of
counts s-1 arcmin-2. (Values of 100 or greater have been truncated to
99.99).
Priority
The source detection string flags. These flags indicate the
sliding window detection history using either the background map (MDETEC) or
the local background (LDETEC), in the hard, soft and broad bands, and take the
values 0 for no detection, or 1 for a detection. The order of the flags is:
MDETEC-broad, LDETEC-broad, MDETEC-hard, LDETEC-hard, MDETEC-soft and
LDETEC-soft.
Detect_Band
This flag parameter indicates in which band the ML detection
occurred, as follows:
Value Band/PHA Channels Energy Range
keV
' ' or 'b': Broad 0.1 - 2.4
'A' : 11-41 0.1 - 0.4
'B' : 52-201 0.5 - 2.0
'C' : 52-90 0.5 - 0.9
'D' : 91-201 0.9 - 2.0
XY_Size
The width of the detect square, in arcseconds.
MPLSX_ID
The source number from the merged source list (MPLSX).
The 2RXF Catalog includes 'missing' sources,
i.e. obvious sources which were not detected by the SASS source detection
software but which could be easily detected by visual inspection. Missed
sources are marked with negative values of the mplsx_id parameter.
Mdet
This flag parameter is set to 'M' to indicates that the count rate
and other parameters were obtained using MDETEC rather than LDETEC.
ML_Like
The source likelihood from the ML algorithm, ML_LIKE.
If the value is >= 10,000, it has been truncated to 9,999.
Extraction_Radius
The source extraction radius used in the ML algorithm,
in arcseconds.
Extent
The width (sigma) of the Gaussian fitted to the source
to characterize its extent, in arcseconds.
Extentlik
The likelihood of the source being extended.
If the value is >= 10,000, it has been truncated to 9,999.
Csq_Flag
The source variability based on the chi2 test, where
'.' means not variable, 'c' means variable.
Ks_Flag
The source variability based on the K-S test, where
'.' means not variable, 'k' means variable.
U_Flag
The source variability based on the U test, where
'.' means not variable, 'u' means variable.
Fft_Flag
The source variability based on the FFT test, where
'.' means not variable, 'f' means variable.
Hardness_Ratio_1
The source hardness ratio HR1 defined by:
HR1 = ( B - A ) / ( B + A ) , where
A is the count rate in the PHA channels range of 11 - 41 (~ 0.1 - 0.4 keV), and
B is the count rate in the PHA channels range of 52 - 201 (~0.5 - 2.0 keV).
Values >= 100.0 have been truncated to 99.99.
Hardness_Ratio_1_Error
The error in the hardness ratio HR1.
Values >= 10.0 have been truncated to 9.99.
Hardness_Ratio_2
The source hardness ratio HR2 defined by:
HR2 = ( D - C ) / ( D + C ) , where
C is the count rate in the PHA channels range of 52 - 90 (~0.5 - 0.9 keV), and
D is the count rate in the PHA channels range of 91 - 201 (~0.9 - 2.0 keV)
Hardness_Ratio_2_Error
The error in the hardness ratio HR2.
Values >= 10.0 have been truncated to 9.99.
Counts_A
The net source counts in the A band, PHA channels range of 11 - 41
(~0.1-0.4 keV).
Counts_B
The net source counts in the B band, PHA channels range of
52 - 201 (~0.5-2.0 keV).
Counts_C
The net source counts in the C band, PHA channels range of 52 - 90
(~0.5-0.9 keV).
Counts_D
The net source counts in the D band, PHA channels range of
91 - 201 (~0.9-2.0 keV).
Counts_A_Error
The mean error in the net source counts in the A band.
Counts_B_Error
The mean error in the net source counts in the B band.
Counts_C_Error
The mean error in the net source counts in the C band.
Counts_D_Error
The mean error in the net source counts in the D band.
Chipl
The reduced chi2 of the power-law fit to the net source
spectrum. If the value is >= 100, it has been truncated to 99.9.
Chirs
The reduced chi2 of the Raymond-Smith model fit to the net
source spectrum. If the value is >= 100, it has been truncated to 99.9.
Contact Person
Questions regarding the ROSPSPCF database table can be addressed to the HEASARC Help Desk.Page Author: Browse Software Development Team
Last Modified: Monday, 16-Sep-2024 17:34:06 EDT
- HEASARC Director: Dr. Andy Ptak
- NASA Official: Dr. Andy Ptak
- Web Curator: J.D. Myers
- Last Modified: 16-Sep-2024