Chandra X-Ray Observatory

CDA - News Item 031

Data Analysis Links
CDA Status
  • The archive is fully functional.
Reprocessing Status
    Reprocessing IV has been completed in December 2014.
Current Software Releases
  • ASCDSVER: 10.12
  • CALDBVER: 4.10.8
What's New
  • Electrical Outage 11/05/21 - 11/06/21
    There will be a planned electrical outage Friday, November 5 2021, 5:30PM - Saturday, November 6 2021, 6:00PM EDT. During this time period ChaSeR and other archive interfaces will be unavailable.
  • Electrical Outage on 07/28/21
    There will be a planned electrical outage Wednesday, July 28 2021, 8:00PM - 10:00PM EDT. During this time period ChaSeR and other archive interfaces will be unavailable.
  • Downtime on 6/12/21
    Due to electrical work, the public interfaces of the Chandra Data Archive will not be available on Saturday 6/12 from 4 AM to 9 PM.
  • Repro V Begins
    The fifth major reprocessing of the archive (Repro V) has started! Details can be found here.
  • Past Notices
News Item 031

Popular Search Interface


A new Popular Interface has been released that allows our users, and especially our visitors who are not professional astronomers, quick and easy access to the exciting images and photon event files that are available from the Chandra Data Archive. It may be used in two modes, depending on the user's needs and preferences:

  • Quick image
    This returns a Jpeg image from the (imaging) observation that scored highest in the search for observations of a particular object or at a particular position.
  • Advanced search
    This mode allows the user to specify additional search criteria, select spectroscopic observations, and ask for all qualifying observations to be returned. The search results provides the user with a choice of qualifying observations as well as different data products: Jpeg as well as FITS images, event files, bibliographic references, and other details on the observations.

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Last modified: 2019-08-26

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