Chandra X-Ray Observatory

Digital Object Identifiers for Chandra Source Catalog v2.1

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  • The archive is fully functional.
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    Reprocessing IV has been completed in December 2014.
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  • 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
Digital Object Identifiers for the Chandra Source Catalog

DOIs for the Chandra Source Catalog 2.1

DOIs have been created for all stacks and observations in the Chandra Source Catalog v2.1 (CSC2.1). The DOIs can be found in the DS_IDENT keywords in the headers of all data products associated with stacks and observations of the catalog. The names of the DOIs are generated using the stack_detect_id and obsid identifiers for stacks and observations, respectively.

In particular, DOIs for stack-level data products are defined as follows:


Similarly, observation-level DOIs are defined as:


These CSC DOIs can be included in a Chandra Data Collection DOI.

If you use a subset of sources in the catalog or any master-source level data products, please cite the catalog-wide CSC2.1 DOI in your publication:


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Last modified: 2024-04-26

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