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Last modified: 12 November 2010

URL: http://cxc-newtest.cfa.harvard.edu/ciao4.2/news.html

What's New for CIAO 4.2

Date

Item

15 Nov 2010

A new version of the Contributed Scripts and Modules tarfile has been released; download the updated package from the Scripts page.

The ciao_contrib.runtool module has been updated to include support for the chandra_repro, combine_spectra and make_psf_asymmetry_region tools, as well as fix an issue that could occur when setting parameters to floating-point values.

The sherpa_contrib.profiles module has been updated so that the routines (e.g. prof_data, prof_fit and prof_fit_delchi) will work with models created using the set_full_model command.

29 Oct 2010

A software bug in Firefox 3.6 on Mac OS X platforms causes some of the CIAO webpages to not print properly to the printer or to PDF file. For multiple-page documents, only the first page is printed.

Pages print correctly from Safari. The bug is fixed in the Firefox 4 Beta release.

26 Oct 2010

A new version of the Contributed Scripts and Modules tarfile has been released; download the updated package from the Scripts page.

The download_chandra_obsid tool provides easy command-line downloads of public Chandra data.

The make_psf_asymmetry_region tool creates a region file indicating the location of the PSF asymmetry found in HRC and ACIS data, as discussed in the Probing higher resolution: an asymmetry in the Chandra PSF.

12 Oct 2010

A new version of the Contributed Scripts and Modules tarfile has been released; download the updated package from the Scripts page.

This update features a bug fix to the combine_spectra script: the SPECRESP column values in the combined ARF were not scaled by the number of files that were combined. Users who combined an ARF with an earlier version of the script should remake it to get the correct output values.

HRC imaging support has also been added to the chandra_repro script, along with additional minor enhancements.

28 Sept 2010

CALDB has been updated to v4.3.1.

Information on the release is available from the CALDB 4.3.1 Release Notes and How CALDB 4.3.1 Affects Your Analysis.

Download CALDB 4.3.1

24 Sept 2010

New software has been added to the Other Software for Chandra Data Analysis webpage: tcticorr applies a temperature-dependent CTI correction to ACIS data. This calibration will be included in version 4.3 of CIAO (December 2010).

16 Aug 2010

A new version of the Contributed Scripts and Modules tarfile has been released; download the updated package from the Scripts page.

This update feature combine_spectra, a script that coadds multiple imaging source PHA spectra, the associated backgrounds and the ARF files.

19 Jul 2010

Version 2 of the Sherpa package for CIAO 4.2 has been released. Sherpa v2 has a number of enhancements, such as two new iterative fitting methods, refinements to parallelization, and many improvements to instrument and source models.

Support for the S-Lang scripting language has been removed from Sherpa in this release. S-Lang is still included for the CIAO tools and modules and for the ChIPS plotting application.

Download Sherpa v2 (Sherpa v2 is not available on Mac OS X 10.4 PPC.)

19 Jul 2010

A new version of the Contributed Scripts and Modules tarfile has been released; download the updated package from the Scripts page.

  • Minor updates to chandra_repro:

    • destreak is run after acis_process_events
    • change to the destreak mask parameter to improve results for ACIS VFAINT data observations.
  • The S-Lang syntax has been removed from the Sherpa contributed ahelp files to coincide with the Sherpa v2 release.

01 Jul 2010

A new version of the Contributed Scripts and Modules tarfile has been released; download the updated package from the Scripts page.

  • [New]The chandra_repro reprocessing script runs all the recommended data processing threads for ACIS imaging data. Future releases will support HRC and grating data. For details and examples, refer to "ahelp chandra_repro".

  • [New] The scale_image_crate (S-Lang or Python help) routine has been added to the crates_contrib.utils module. It is useful for scaling images to be displayed by the ChIPS add_image (S-Lang or Python help) routine.

  • The ciao_contrib.runtool module can now be used to run the following tools: acis_run_hotpix, axbary, dmgti, evalpos, pileup_map, tgdetect and wavdetect. Problems with trying to set the rand_pix_size parameter of acis_process_events, hrc_process_events and tg_resolve_events have been resolved.

19 Apr 2010

CALDB has been updated to v4.2.2.

There were two errors in the CALDB 4.2.1 release that are fixed in CALDB 4.2.2. Information on the release is available from the CALDB 4.2.2 Release Notes and How CALDB 4.2.2 Affects Your Analysis.

Download CALDB 4.2.2

12 Apr 2010

Errors in CALDB v4.2.1

There is an error in the ACIS index file for one of the TGAIN Epoch 40 datasets in CALDB 4.2.1 (full and patch tarfiles). This produces a harmless warning in acis_process_events. An unrelated error exists in the latest ACIS-I1 background file; it contains only one column and is not usable.

Corrected CALDB tarfiles will be released early next week (19 April); users who have not upgraded to CALDB 4.2.1 yet may choose wait until these files are available.

5 Apr 2010

CALDB has been updated to v4.2.1.

Information on the release is available from the CALDB 4.2.1 Release Notes and How CALDB 4.2.1 Affects Your Analysis.

Download CALDB 4.2.1

28 Dec 2009

The CXC is phasing out support for the S-Lang interface in Sherpa and ChIPS - only the Python interface will be supported after CIAO 4.2. This decision was made based on the results of the 2009 CIAO Software Survey.

New users of CIAO 4 should learn the Python syntax for ChIPS and Sherpa. The CXC is committed to helping existing S-Lang users transition to Python; contact Helpdesk if you need assistance.

15 Dec 2009

CIAO 4.2 and CALDB 4.2.0 have been released. Read the CIAO release notes and CALDB Release Notes for detailed information.

Download CIAO and CALDB


Last modified: 12 November 2010