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

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E.6. SWIFT BAT SOFTWARE BUILD 8: 2004 MAY 24 199 corrections are applied to negative weights. Small fixes and cleanups. The task is compile-compatible with the new attitude library version by Ed Pier. battblocks - SIGNIFICANT CHANGES battblocks - v1.0 - Major changes. The cost function for data with gaussian errors has been revised, and can be considered non-experimental. Burst duration measures are now computed, including T90, T50, and Tnn, where nn is choosable by the user (with the txx parameter). Also the interval around the peak flux is estimated (the interval size is determined by the tpeak= parameter). Computations of these measures is enabled by the durfile= parameter, which specified an output GTI file. The durations are also written to the master output GTI as keywords. A second major area of improvement is the addition of a "progressive" Bayesian blocks implementation, enabled by the tlookback= parameter, which should be much faster for most time series. [ This implementation requires two iterations. ] E.6 Swift BAT Software Build 8: 2004 May 24 1. Outstanding Issues This build includes several revisions to optimize for speed and accuracy of the BAT tools. However, there are several things not included. a) BAT teldef file is still "Z-pointed" (it should be straightforward to deliver a new version on a short timescale) b) A mechanism to construct multiple spectra during slews does not exist. A new interface must be developed between batmaskwtevt and batbinevt to pass time-variable auxiliary information to the response matrix generator. c) These tools do not take into account all of the file format changes required by HEASARC. 2. Summary of tools There are no new tools in this release, only revisions to existing tools. Revised tools batbinevt - * auto quantization of photon energies; * cosmetic improvements to output statistics
200 APPENDIX E. BAT SOFTWARE REVISION HISTORY batcelldetect - * print RA/DEC to console if attitude info is available; * column name changes for consistency with the BAT flight catalog naming, and with batmaskwtevt/batdrmgen * bug fix of TNULLing output catalog, when fitting multiple-images * account for the possibility of a flipped image batclean - * column name changes for consistency with the BAT flight catalog naming, and with batmaskwtevt/batdrmgen batdrmgen * extensive changes to improve computational efficiency * new "depth distribution" format is more compact on disk batfftimage * new default shows images with East = left batmaskwtevt/img * significant raytracing code speed-ups (approx. factor 10 faster) * simplication of "corrections" parameter; new value of "default" gives the BAT team’s recommended corrections * keyword name changes for consistency with batdrmgen batsumdph * extensive code cleanups and bug fixes battblocks * more extensive error checking, and bug fixes Tasks batevt2dpi, batgse2dpi, and batmasktagpha are considered obsolete, and/or not for end users. E.7 Swift BAT Software Build 9: 2004 Aug 11 1. Overview This build contains significant changes from the previous build. Most gamma-ray burst analysis will depend on features and bug fixes in this build. This release compiles and runs its unit tests successfully on Linux, Mac OSX, and Alpha OSF. See below for some issues with the Alpha. A new "X-pointed" teldef file is delivered in the CALDB. 2. Summary of tool changes
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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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86 APPENDIX B. BAT FITS KEYWORDS
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The SWIFT BAT Software Guide Version 6.3 30 ... - HEASARC - Nasa

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