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

216 APPENDIX E. BAT SOFTWARE REVISION HISTORY
the errors are set to zero.
* The task can now read both kinds of detector enable maps: table and image.
* Some bug fixes related to writing the TOTCOUNT keyword
batcelldetect
* The ERR_RAD column in the input catalog is now handled as documented: if
the ERR_RAD value is zero for a source, then the position is held fixed
* The coordinate precision of images with non tangent plane projections
is better.
batclean
* Bug fixes: the chi-square value is now correct; and NULL values are
handled correctly
Tasks batevt2dpi, batgse2dpi, batgse2dph, and batmasktagpha are
considered obsolete, and/or not for end users.
E.16 Swift BAT Software Build 18: 2006 Mar 15
1. Overview
This build contains improvements and fixes to many tools.
All unit tests pass, and are based on the "production" version of the
BAT CALDB, as released to the public.
2. Summary of tool changes
Revised tools
batbinevt
* BUG FIX regarding the calculation of energy bins; the *top-most*
bin only would miss a 0.1 keV slice of the data
* Improved checking for overlapping energy bins
* Checking if input is a DPH of cleaned RESIDUALs (prevents erroneous
statistical uncertainties from being calculated)
* Work around a BUG in XSPEC which transforms small error bars into
big (occurs when using a PREDICTED map)
* Remove some Chandra Data Model keywords that become erroneous after
binning
batcelldetect
* BUG FIX when ’nadjpix’ > 1; should only affect the chi-square values
reported
* New parameters ’inbkgmap’ and ’inbkgvarmap’ which allow pre-computed
background information (saves computational time)
* New parameter ’carryover’ which controls whether new sources are
carried over to subsequent images in a multi-image analysis
* New PSF type: "TRUNCONE" for azimuthally averaged images