The SWIFT BAT Software Guide Version 6.3 30 ... - HEASARC - Nasa
The SWIFT BAT Software Guide Version 6.3 30 ... - HEASARC - Nasa
The SWIFT BAT Software Guide Version 6.3 30 ... - HEASARC - Nasa
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D.10. <strong>BAT</strong>GRBPRODUCT 147<br />
(within 1500 seconds), including the pre-slew, slew and post-slew intervals. <strong>The</strong> “tdrss”<br />
file contains time intervals transcribed from the TDRSS position message. Files with “bb”<br />
are Bayesian blocks produced with the battblocks task on light curves with different time<br />
binnings.<br />
outdir/auxil Auxiliary information. <strong>The</strong> file with “qmap” is a detector quality map. <strong>The</strong> file with<br />
“output.cat” contains a revised position based on a fit to all pre-slew data. <strong>The</strong> “output.reg”<br />
file is a region file suitable for use within DS9 or FV. <strong>The</strong> “evaux” file is an auxiliary raytracing<br />
file.<br />
outdir/events Event files. Intermediate event files are stored here. Since they are re-created each<br />
time the task is run, the files in this directory can be deleted if desired.<br />
D.10.6 ERRORS<br />
Most error conditions are reported on the console. Please note that not all bursts are the same,<br />
and the Swift spacecraft response is not the same. For example, there may not be a slew to the<br />
burst, in which case, there won’t be “slew” and “post-slew” spectra or images. Also, if the burst<br />
does not extend past the end of the slew (if there is one), there will not be a post-slew spectrum.<br />
<strong>The</strong> task will report these failures to produce spectra and images as errors, but they are benign.<br />
For certain kinds of bursts – namely short hard bursts – the task is not always able to find the<br />
time interval of the burst. In those cases, the user must manually determine the time interval of<br />
the burst and use the trigtime and trigstop keywords to the task.<br />
D.10.7 PARAMETERS<br />
indir [string ]<br />
Input directory containing Swift data. This directory must have the standard Swift archive<br />
layout. Files in the input directory will not be modified.<br />
outdir [string ]<br />
Output directory which will contain the processing results. <strong>The</strong> output files are organized<br />
by file type: events, pha (spectra), lc (light curves), gti (good time intervals), auxil (miscellaneous).<br />
Also a summary report is created (report.txt), and a detailed processing log<br />
(process.log).<br />
ra = “<strong>BAT</strong>” [string ]<br />
RA of the source (degrees). A value of “<strong>BAT</strong>” or “XRT” means that the <strong>BAT</strong> or XRT<br />
TDRSS position should be used. A value of “BLIND” means to do the analysis blind, without<br />
concentrating on any one position in the field of view. When “BLIND”, then the trigtime/trigstop/backstrt/backstop<br />
parameters must be specified.<br />
dec = “<strong>BAT</strong>” [string . ]<br />
Declination of the source (degrees). See “ra”.<br />
trigtime = 0.0 [real ]<br />
Start time of the foreground interval containing the burst in mission elapsed time. A value of<br />
0 indicates to use the times from the TDRSS position message, and a non-zero value overrides<br />
the TDRSS message.