NAME
batphasyserr - apply BAT spectral systematic error vector
USAGE
batphasyserr infile syserrfile
DESCRIPTION
batphasyserr adds the BAT systematic error vector to a BAT spectral
file. The systematic error vector contains an estimate of the
fractional systematic error in each BAT spectral channel. Normally
this information comes from the BAT calibration database (CALDB).
The task handles the differences between type I and type II spectral
files transparently. It also resamples the systematic error template
to the energy bin edges of the input spectrum (this is done by pure
averaging).
PARAMETERS
- infile [filename]
- Input/output spectral file. The file should be an OGIP-standard
type I or type II spectral file. The DATE-OBS keyword is used to
query the CALDB. The file is modified in place. If necessary, the
SYS_ERR column is created, and the SYS_ERR keyword is deleted.
- syserrfile [filename]
- Name of the systematic error vector file to use. Normally this
should be set to "CALDB" so that the current best estimate of the BAT
spectral systematic error is used for the date of the given infile.
- (chatter = 2) [integer, 0 - 5]
- Controls the amount of informative text written to standard
output.
EXAMPLES
1. Create the SYS_ERR column in a spectral file named
myspectrum.pha.
batphasyserr myspectrum.pha CALDB
The systematic error vector is retrieved from the calibration database.
SEE ALSO
batupdatephakw
LAST MODIFIED
Aug 2007