== eSASS Users News 2020/6 ==

 * New eSASS users release: '''eSASSusers_201009'''.

{{{#!wiki important
'''There are major upgrades on this release, even if you have installed previously eSASS it is encouraged to go through the documentation once again.'''}}}

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=== New eSASS release: eSASSusers_201009 ===

Middle of October 2020. The fifth eSASS users' release, after launch, has been released '''eSASSusers_201009'''.

 {i} For the moment this release is functional for Ubuntu 16.04 and 18.04 with their default gcc compilers (see further info below).

Click [[eSASSinstall|here]] for detail instructions on how to install it on personal computers.

'''New fixes and added features:'''

 * All eSASS tasks can now work with *.fit.gz files, and also write *.fits.gz files.

 * [[http://erosita.mpe.mpg.de/eROdoc/tasks/flaregti_doc.html|FLAREGTI (v1.20)]]:
  * Fix to remove zero-length GTIs.
  * Exclude periods with no counts from calculations, which would otherwise break results.
  * Fix if the number of input GTIs > 2880.
  * Fix to not produce empty output FLAREGTIs if there is a very short input GTI.
  * Fix for scanning threshold if all rates are the same.

 * [[http://erosita.mpe.mpg.de/eROdoc/tasks/evtool_doc.html|EVTOOL (v2.10.1)]]:
  * GTI filtering of DEADCOR, OFFSET and all HK extensions has been implemented (previously only CORRATT was filtered).
  * The sense of rotation of regions has been brought into line with DS9.
  * Previously, if {{{--events}}} was set to {{{no}}}, the events extension was omitted from the output, but all other extensions were written. Now, {{{events=no}}} causes DEADCOR, CORRATT, BADPIX and all HK extensions also to be omitted (retained are *GTI extensions as well any the REGION and RAWXY_SEL extensions.)
  * Added {{{auto}}} as a permitted argument for the command-line parameters {{{size}}} and {{{center_position}}}. The effect of these is to cause the task to respectively size and locate the image so as to include all valid events. Note that a maximum image pixel dimension of 18000 (equivalent to a 20 degree stretch of 4 arcsec pixels) has been hard-wired into the codeb (later this number may be moved to an environment variable.)
  * Added a {{{flag_invert}}} boolean parameter, which inverts the selection on flag bits. With this at default {{{no}}}, the usual action occurs, i.e. any event with any of the specified flag bits set is discarded. With {{{flag_invert=yes}}}, such events are instead the only ones retained.
  * Flag selection is now also stored, for convenience of the user, as a string in the comment of the FLAGSEL keyword.

 * [[http://erosita.mpe.mpg.de/eROdoc/tasks/srctool_doc.html|SRCTOOL (v1.59.1)]]:
  * The suffix parameter can now contain a filename extension allowing writing compressed files (i.e. suffix with extension .fits.gz)
  * Large reduction in stack usage, which now means that the ulimit -s command is no longer necessary to use srctool.

 * [[http://erosita.mpe.mpg.de/eROdoc/tasks/catprep_doc.html|CATPREP (v1.25.1)]]:
  * Band-dependent column units are now copied by CATPREP from the input source list.
  * Added a new parameter {{{detuid_prefix}}} (defaults to empty string) which is prepended to detuid names in the output to catprep. Its maximum length is currently 25 characters - anything else is truncated.

 * And many more bug fixes and added features. Check out the individual tasks pages for further information ([[https://erosita.mpe.mpg.de/eROdoc/|click here]]). Specific information on the changes in individual tasks can be found on the !ChangeLog file of each task ({{{/<my eSASS path>/sw/eSASSusers_201009/erosita/task/TASKNAME}}}).

'''Warnings:'''

 * This eSASS users release version will not work on Ubuntu systems lower than 16.04.

 * This release is still not available for macOS and Ubuntu 20.04 with gcc compiler v>8. A Docker container is being prepared for users with these operatives system.

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The eSASS team

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