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

128 APPENDIX D. BAT SOFTWARE TOOL REFERENCE
(nphoton bins = 200) [integer ]
The number of bins desired in the incident photon energy scale (used for escale = LIN or
LOG as discussed above).
(elimit lo = 10.0) [real ]
The desired lower energy limit for the incident photon energy scale (used for escale = LIN or
LOG as discussed above).
(elimit hi = 500.0) [real ]
The desired upper energy limit for the incident photon energy scale (used for escale = LIN
or LOG as discussed above).
(efile = CALDB) [string ]
File name for the user-specified FITS file containing the user’s custom incident energy bin
edges (used for escale = FILE as discussed above). The default value, “CALDB” indicates
that the default incident bin edges will be used. This default bin edges have the energy range
of 10 keV to 1000 keV divided into 200 logarithmically-spaced bins with bin edge adjustment
made for the absorption edges of CdZnTe (26.711 keV for the Cd K edge and 31.814 for the
Te K edge). As indicated, the file containing the default input bin edges is managed by the
CALDB utility.
(hv def = 200.0) [real ]
The default detector bias voltage setting, in volts. This value is used if no hkfile is specified. If
an hkfile is specified and some of the values contained in it are NULL, this value is substituted
in place of the null values.
(vthr def = 12.0) [real ]
The default XA1 threshold setting, in millivolts. This value is used if no hkfile is specified. If
an hkfile is specified and some of the values contained in it are NULL, this value is substituted
in place of the null values.
(fudge = INDEF) [string ]
A string specifying which correction should be applied to the response matrix calculation.
Possible values are:
INDEF Apply default correction (equivalent to CRAB)
CRAB Apply correction derived by fitting the residuals of the uncorrected matrix to an
on-axis crab spectrum
NONE Do not apply a correction
(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 detailed debugging information.