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

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D.19. BATTBLOCKS 183 (chatter = 2) [integer, 0 - 5 ] Controls the amount of informative text written to standard output. Setting chatter = 1 produces terse output; 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. D.19.5 EXAMPLES 1. Partition data into Bayesian Blocks battblocks burst.evt burst_bb.gti 2. Same as example 1, but with further event decimation battblocks burst.evt burst_bb.gti nspill=256 3. Extraction of Bayesian blocks from a light curve; extraction of burst durations, including a user specified level of 68.3% of the burst (T90 and T50 intervals are always computed) battblocks burst.lc burst_bb.gti durfile=burst_dur.gti txx=68.3 D.19.6 REFERENCES Scargle, J. D. 1998, ”Studies in Astronomical Time Series Analysis. V. Bayesian Blocks, a New Method to Analyze Structure in Photon Counting Data,” Astrophys. J., 504, 405 D.19.7 LAST MODIFIED Apr 2007
184 APPENDIX D. BAT SOFTWARE TOOL REFERENCE D.20 BATUPDATEPHAKW D.20.1 NAME batupdatephakw - update BAT ray tracing columns in spectral files D.20.2 USAGE batupdatephakw infile auxfile D.20.3 DESCRIPTION batupdatephakw updates the BAT ray tracing columns in a mask weighted spectrum. This is important especially for gamma-ray bursts or other events where the spacecraft has slewed. Without the update, the keywords will reflect the ray tracing status at the end of the event data set, which will lead to an erroneous detector response matrix. The ray tracing quantities that are updated are: MSKWTSQF, NGOODPIX, PCODEFR, BAT XOBJ, BAT YOBJ, BAT ZOBJ. This script modifies the spectral file in place. Thus, the spectrum must be writeable and not compressed. New columns are created if they are not already present. If keywords with the same name are present, then they are deleted (to prevent confusion with the columns). This task requires the “auxiliary” file produce by batmaskwtevt, which contains the above quantities as a function of time. D.20.4 PARAMETERS infile [filename ] Input/output spectral file. The file should be a batbinevt-derived OGIP standard Type I or Type II spectral file. The file should contain at least the TIME and EXPOSURE keywords. The file is modified in place. auxfile [filename ] Name of the “auxiliary” ray trace file produced by batmaskwtevt. The times in the auxiliary file should overlap with the times in the spectral file. (chatter = 2) [integer, 0 - 5 ] Controls the amount of informative text written to standard output. D.20.5 EXAMPLES 1. Update the ray tracing columns in a spectral file named myspectrum.pha.
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