The SWIFT BAT Software Guide Version 6.3 30 ... - HEASARC - Nasa

D.15. BATMASKWTIMG 169
nearfield Near field corrections for ground calibration analysis only
• The “pcode” and “ndets” corrections require the user to supply the detmask
keyword.
(detmask = “NONE”) [string ]
Name of a detector quality map file. This should be an image file with the same dimensions
as the detector plane map. A pixel value of 0 indicates the detector is enabled, and a non-zero
value indicates disabled. A default value of NONE implies all detectors are on, except for the
BAT detector gap regions. This map is only used for computing the fraction of illuminated
pixels. The output mask weight map contains a value of zero for all bad quality pixels.
detmask.
(subpixsize = 0.02) [real ]
Size of detector subpixels used in computing mask weighting, in centimeters. Can be no larger
than 0.02 cm.
(teldef = “CALDB”) [string ]
BAT instrument telescope description file, which defines instrument-to-spacecraft alignments.
Must be specified when celestial coordinates are provided. If the CALDB database is set up,
then CALDB can also be specified.
(gapval = 0.0) [real ]
Value to place in image cells where detector gaps are located.
(origin z = 0) [real ]
For ground testing with a near-field source. The position of the origin of coordinates (in cm),
to which the source position is referred.
(maskwtswgain = 0.04) [real ]
Mask weight technique software gain correction factor. When corrections=maskwt, the
weights are divided by (1+maskwtswgain). This is correction is software algorithm dependent
and not intended to be changed by the user.
(clobber = NO) [boolean ]
If the output file already exists, then setting “clobber = yes” will cause it to be overwritten.
(chatter = 2) [integer, 0 - 5 ]
Controls the amount of informative text written to standard output. Setting chatter = 1
produces a basic summary of the task actions; chatter = 2 (default) additionally prints a
summary of input parameters; chatter = 5 prints debugging information.
(history = YES) [boolean ]
If history = YES, then a set of HISTORY keywords will be written to the header of the
specified HDU in the output file to record the value of all the task parameters that were used
to produce the output file.