Chandra X-Ray Observatory
	(CXC)

CDA - News Item 021

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Data Analysis Links
CDA Status
  • The archive is fully functional.
Reprocessing Status
    Reprocessing IV has been completed in December 2014.
Current Software Releases
  • ASCDSVER: 10.11.1
  • CALDBVER: 4.10.2
What's New
  • Electrical Outage 11/05/21 - 11/06/21
    2021-11-05
    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
    2021-07-26
    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
    2021-06-10
    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
    2020-10-26
    The fifth major reprocessing of the archive (Repro V) has started! Details can be found here.
  • Past Notices
News Item 021

Release of anonymous ftp version of the CDA

2002-09-19

The primary (only!) products of all public Chandra observations are now accessible on an anonymous FTP site. This archive is being kept up-to-date in real time. That means that observations that are released to the public are available from this ftp archive almost immediately and that old data versions are replaced by new, reprocessed ones as soon as they are released.
Note that, although it provides access to these data products by ObsId, there are no search and query facilities. For search engines and more sophisticated retrieve options we strongly recommend the use of ChaSeR or WebChaSeR.

See the README file for details.

This page maintained by the Chandra Data Archive (arcops@cfa.harvard.edu).

Last modified: 2019-08-26

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