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

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E.12. SWIFT BAT SOFTWARE BUILD 14: 2005 MAR 22 209 daria CVS server. All unit tests are based on the "production" version of the BAT caldb. 2. Summary of tool changes There is one new tool, batupdatephakw. From the documentation: : 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. This task was implemented in response to the known BAT science analysis issue, entitled, "batmaskwtevt: Slewing Raytracing Keywords Wrong". Revised tools batbinevt * Correct name of POISSERR keyword in output spectra * INTERFACE CHANGE: Allow the user to delete bins with zero counts. Before, the task always deleted these bins, in order to prevent battblocks from crashing. (’delzeroes’ parameter) * Some warning messages for unlikely user configs. batcelldetect * INTERFACE CHANGE: New parameter ’hduclasses’ which allows filtering of input images by HDUCLASn keywords. * Now able to read an image without an auxiliary tangent plane coordinate system. * Input catalog can have galactic coordinates (if the image is also in galactic coordinates) * Output images now have proper HDUCLASn keywords batclean * Can now enter custom background models via the ’bkgmodel’ parameter. * INTERFACE CHANGE: Can now rebalance the focal plane image before or after cleaning, with various rebalancing options (’balance’ and ’balancefirst’ parameters). * INTERFACE CHANGE: Can now ignore certain sources in the catalog via the ’ignore’ parameter. * Fixes and simplifications to the way the background model is applied. * New CLEANLEV output keyword keeps track of the generation level of cleaning.
210 APPENDIX E. BAT SOFTWARE REVISION HISTORY batdrmgen * INTERFACE CHANGE: A new hidden parameter called "row" has been added that lets the user specify which row of a pha file a response matrix should be made for, in cases where there are multiple spectra in a pha file. * The task will search for columns first, then keywords, with the following names: BAT_XOBJ, BAT_YOBJ, BAT_ZOBJ, PCODEFR, NGOODPIX, and MSKWTSQF. Before, it only searched for keywords. * INTERFACE CHANGE: A correction function has been added to improve the response to the Crab spectrum. This is mediated by the "fudge" parameter (which until now has been ignored by batdrmgen). * (Other changes are pretty transparent to the user, such as using finer binning to improve the response fidelity and changing the model of the passive material transmission to include the Ag and Au edges.) bateconvert * INTERFACE CHANGE: Added cubic-residual ADU to energy conversion, with residuals computed by ADU or by corresponding DAC value. ’calmode’ parameter options now include INDEF, LINEAR, QUADRATIC, CUBIC, DIRECTCUBIC, or FIXEDDAC. Except when using the LINEAR correction, residfile must be compatible with the calmode selection. FIXEDDAC is the recommended value for normal energy computation. Most users can enter INDEF, and use CALDB for the residfile. LINEAR is provided in order to reproduce the flight software energy calculation. The others are provided primarily for testing. * A scaling bug that had a minor effect on results (because gains and offsets have changed very little) was fixed. * A bug that prevented use of the rarely-used zeroit option was fixed. baterebin * Added cubic-residual ADU to energy correction, with residuals computed by ADU or by corresponding DAC value. The method is selected by selecting a residfile. Using the current CALDB file will apply the cubic-residual correction at fixed DAC values. * Fixed an error that shifted all energy bins by approximately 0.1 keV (0.5 ADU). batfftimage * INTERFACE CHANGE: Now can compute the theoretical variance and significance maps via the ’bkgvarmap’ and ’signifmap’ parameters. * KNOWN BUG: output significance images contain bogus values in the "dead" areas. WORKAROUND for source detection: use ’pcodefile’ option of batcelldetect. * Output images now have proper HDUCLASn keywords batmasktaglc * INTERFACE CHANGE: A new hidden parameter has been added to
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The SWIFT BAT Software Guide Versio
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ii CONTENTS 4.4 How Sky Fluxes are
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iv CONTENTS 6 BAT Analysis Issues 5
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vi CONTENTS D.1.6 SEE ALSO . . . .
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viii CONTENTS D.10.2 USAGE . . . .
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x CONTENTS D.18.5 EXAMPLES . . . .
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xii CONTENTS
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2 CHAPTER 1. INTRODUCTION • Appen
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