ChangeLog for backcorr
======================

Version 3.8 - 2024-04-30 (AI)
-----------------------------
+ ccf.cif in test directory updated (SPR-7745)

Version 3.7 - 2018-02-13 (EO)
-----------------------------
+ This is a new major version of this package including a new GNU
Public License Text disclaimer required to distribute the SAS source
code to the Astronomical Community under the terms of the GNU Public
License. The text as it is shown below is the same that has been
included in all SAS source code files.

This file is part of ESA's XMM-Newton Scientific Analysis System
(SAS).

SAS is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

SAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with SAS. If not, see <http://www.gnu.org/licenses/>.
---------------------------------------------------------------------

Version 3.6 - 2006-01-09 (NW)
-------------------------------

Corrected a small calculation error in make_backcorr that was
causing some values in the output (corrected background spectrum) to
be too small by a factor 0.5 or 0.333 as pointed out in SSC-SPR-3551.
The same SPR requested that the detector map used to calculate the
arf file for the background
spectrum should be a flat detector map and further parameters to be
added to the task so that the user can provide the eventlist,
required by arfgen if a bad pixel correction is to be made as well as
the option to keep the intermediary arf files. RDS also suggested
calling arfgen with extendedsource=yes. These have all been
done and the documentation has been updated.

Version 3.5.1 - 2005-06-07 (NW)
-------------------------------

Change to DEPEND for releasetrack version

Version 3.5 - 2004-11-26 (NW)
-------------------------------

Included dsslib' in DEPEND, as requested in SSC-SPR-3420.

Version 3.4 - 2004-11-02 (NW)
-------------------------------

Fixed a small bug that could result in a divide by zero in some cases.

Version 3.3 - 2003-11-03 (NW)
-------------------------------

Changed the USEDLIBS in the src/Makefile so that the task also
builds in the static build

Version 3.2 - 2003-05-07 (NW)
-------------------------------

Changed the test harness, as the detector map may not be specified
in X/Y coordinates in the current release of arfgen. This closes
SPR-3118, `test harness fails whilst running arfgen'.

Version 3.1 - 2002-11-20 (NW)
-------------------------------

As version 3.0, but with param 2. + for the development track.

Version 3.0 - 2002-11-19 (NW)
-------------------------------

Major revisions after questions from the helpdesk. Corrected the
cycle theiloop to cycle thejloop (typo) and added parameters to
allow the user to make a background correction for highly off-axis
sources if required. Added inputs for the source co-ordinates, to
be used by arfgen, in the same manner as arfgen. A PSF function
is now used for the `detmaptype' and the BACKSCAL value is
set. The documention and the test harness have also been updated.

Version 2.4 - 2002-07-25 (NW)
-------------------------------

Updated the DEPEND file. It now includes a dependence on sas.

Version 2.3 - 2002-06-03 (NW)
----------------------

Made the updates necessary for the new version of param

Version 2.2.4 - 08-02-02 (NW)
----------------------

Test harness completely changed to solve the problem raised in
SPR-2732 `test_backcorr. 2 fixes so test passes at MPE'. The test
now calls a fortran program to test the output of backcorr, by
checking the spectral content and the content of the headers. In
this way any problems with different platforms is avoided.

Version 2.2.3 - 23-11-01
----------------------

Changes made to the test, to reflect the recent changes made to
programs preceding backcorr.

Version 2.2.2 - 07-11-01
----------------------

Further refinements made to the test, to stop it failing on Linux.

Version 2.2.1 - 19-10-01
----------------------

A change has been made to the test, to stop it failing on Linux.

Version 2.2 - 12-09-01
----------------------

A `do loop' at the end of the `make_backcorr' module has been changed
so that the energy boundaries don't have to exactly match those of
the arf. This is to stop `backcorr' crashing with 'Internal file
overflow', with regards to SPR 2511. The test has also been
changed, so that it doesn't rely on the type of ftools being run,
thus solving the problem in SPR 2532.

Version 2.1.5 - 31-05-01
----------------------

The test has also been changed so that it doesn't test for
high or a low memory model.

Version 2.1.4 - 30-05-01
----------------------

The test has also been changed so that it takes into account a
high or a low memory model.

Version 2.1.3 - 22-05-01
----------------------

Documentation has been changed to include an example of how to use
backcorr and to document the columns required in the input files.
The test has also been changed to make it sensitive to error in
the task.

Version 2.1.2 - 27-04-01
----------------------

Changed the system call to call deleteDataSet which is appropriate
for the SAS.

Version 2.1.1 - 02-11-00
----------------------

Revised the documentation and updated the GROUPS description

Version 2.1 - 03-10-00
----------------------
Updrade the version number as required for the SAS V5

Version 2.0.2 - 2000-09-26(DB)
-------------------------------

Update the .info files to comply to the GROUPS definition

Version 2.0.1 - 2000-06-27(DB)
-------------------------------
SSC-SPR-1808 backcorr (version 2.0) - add make_backcorr.info file in the distribution.
+ Reactivate the test harness now that arfgen has settled a little bit, and make the code work with
the arf files produced by arfgen.

Version 2.0 - 2000-05-27(DB)
----------------------------

Major changes to the interface to follow latest release of arfgen
(this fixes SSC-SPR-1686). This implied several changes in the
code also, as some checks that do not need any longer to be done
in the task (e.g. shape of the extraction region, this is now done
in arfgen). Update of the documentation. Addition of the layout
file, the info file.

Version 1.7 - 2000-04-19(GV/SOC)
------------------------
+ resubmission of 1.6, having removed build.tmp_ tht was causing the distcheck to fail.

Version 1.6 - 2000-04-18
------------------------

The following SPRs have been fixed:

SSC-SPR-1640 backcorr (version 1.5.1): documentation macros

SSC-SPR-1628 backcorr (version 1.5.1): Task fails test harness

Version 1.5.1 - 2000-03-10 (GV/SOC)
-------------
+ patched to cope with a problem in the dal. Do not absorb this
patch in the development track.

Version 1.5 29/11/1999
----------------------

SSC-SPR-1358 fixed: In the test file I was testing for SAS_CCFDIR which is no
longer a environment variable needed

Version 1.4 28/09/1999
----------------------

The following SPR has been fixed:

SSC-SPR-1270
backcorr (version 1.3): Use message instead of write(*,*)

Note that the input spectrum now contains 4095 channels to
comply with the CAL.

Version 1.3 30/07/1999
----------------------

The following SPR has been fixed

SSC-SPR-1132
backcorr (version 1.2): dummy template .cc break build on Digital
Unix (+fix) Submitted on 29th July 1999 by Achim Bohnet
(ach@mpe.mpg.de) Closed 30th July 1999

Version 1.2 10/07/1999
----------------------

Following the tests performed by Dean Hishaw, the following SPRs
have been raised and are now closed in the version 1.2

SSC-SPR-1046
backcorr (version 1.1): Warning in verbosity level
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1049
backcorr (version 1.1): Bad output with high verbosity
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Accepted 10th July 1999
Closed 10th July 1999
SSC-SPR-1047
backcorr (version 1.1): Unclear message for spectrum with zero rows.
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1045
backcorr (version 1.1): Does not fail when SAS_CCFDIR not set
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1044
backcorr (version 1.1): Should not test for FTOOLS in test harness
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1048
backcorr (version 1.1): Output file not OGIP compliant
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1043
backcorr (version 1.1): background region file not an annulus
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1042
backcorr (version 1.1): Input test file is not OGIP compliant
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1041
backcorr (version 1.1): parameter names do not follow SAS conventions
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1040
backcorr (version 1.1): Errors in parameter file
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1039
backcorr (version 1.1): backcorr should not depend on evselect
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999
SSC-SPR-1038
backcorr (version 1.1): Potential scope of variables to broad
Submitted on 8th July 1999 by Dean Hinshaw (dah@star.le.ac.uk)
Closed 10th July 1999

The documentation has been changed accordingly.

Version 1.1 05/07/1999
----------------------

- arfgen is now included in the DEPEND file

Version 0.1
----------------------------

- Directory structure created by pkgmaker.