Chandra X-Ray Observatory

CDA - News Item 017

Data Analysis Links
CDA Status
  • The archive is fully functional.
Reprocessing Status
    Reprocessing IV has been completed in December 2014.
Current Software Releases
  • ASCDSVER: 10.9.2
  • CALDBVER: 4.9.3
What's New
  • Repro V Begins
    The fifth major reprocessing of the archive (Repro V) has started! Details can be found here.
  • Archival Target Names
    Details on the replacement of archival "bad" target names can be found here
  • Chandra Footprint Service
    The new secure Footprint Service can be found here
  • Past Notices
News Item 017

New release of ChaSeR and WebChaSeR


New versions of our archive search and retrieval tools have been released, with mainly bug fixes for ChaSeR and enhancements for WebChaSeR.


  • In Detail display data and label were misalligned following OCAT modifications for NRA4; this has been fixed.
  • Reset button on query form now clears all entries and restores the default query constraints.
  • ChaSeR will return with an error when the connection to the server fails.
  • Prevent server error on search with all checkboxes unchecked.
  • Add row number to observation search results table.
  • Parse/validate format of entered value for radius and prevent server error on wrong input.
  • Disallow login with blank username and password.
  • Fixed problem with public release date not displayed.


  • Support password change.
  • Added Name Resolver option using SIMBAD.
  • Added choice of coordinate system and format for input and output coordinates.
  • Limited to 50 the number of obsids selected for browse/retrieve data (still coming: information message to user).
  • Hide ftp path of retrieved data while the tar files is being created.
  • Added numbers to displayed obsid rows.
  • Added row number to Browse results table.
  • Added choice of ascending/descending sort order for displayed obsids.
  • Fixed problem with public release date not displayed.
  • Added support for change password.
  • Disallow login with blank username and password.
  • Generate a validation error on Browse/retrieve with both Primary and seconday unselected.
  • Dynamically configure WebChaseR for installation at any server.
  • No crashes on Search if everything is unselected.
  • Parse/validate format of entered value for radius and prevent server error on wrong input.
  • Error in one input field does not clear form anymore.

Two caveats are being added:

  • Selecting a range in galactic coordinates works reasonably well for small rectangles, as long as one stays away from the poles. Large ranges and ranges covering the polses may give surprising results.
  • For certain ObsIds retrieval of secondary and/or supporting products (e.g., aspect solutions) may not return all products that are required.

This page maintained by the Chandra Data Archive (

Last modified: 2019-08-26

Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email: Smithsonian Institution, Copyright © 1998-2019. All rights reserved.