CDA - Documentation
- ChaSeR
- Chandra Source Catalog ♦ CSCview
- Chandra Footprint Service
- Request for Acknowledgement
@ChandraArchive
The Archive
- Public Data
- Proprietary Data
- Repro III
- Repro IV
- Repro V
- Privacy Impact Assessment
- Release Notes
- Documentation
- Archive Operations Team
Search and Retrieve Data
Advanced Data Services
- Synopsis of Services
- Footprint Service
- Chandra MOCs
- Chandra Source Catalog
- SDSS Cross-Match Catalog
- Bibliography Search
Archive User Services
- Synopsis of Services
- Processing Status
- Special Requests
- Dataset Identifiers
- Contributed Datasets
- CXO Papers Repository
Chandra Aggregated Datasets
Publishing Chandra Results
Data Analysis Links
CDA Status
- The archive is fully functional.
Reprocessing Status
-
Reprocessing IV has been completed in December 2014.
Current Software Releases
- ASCDSVER: 10.10
- CALDBVER: 4.9.5
What's New
- 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. - Archival Target Names
2020-09-15
Details on the replacement of archival "bad" target names can be found here - Past Notices
Chandra Data Archive Documentation
- ASC FITS conventions (Postscript)
- Download statistics may be accessed here.
- The Guide to Chandra Archive Data Products.
- The table of data products with values for the CONTENT, HDUNAME, HDUCLASn, etc., keywords (the content.txt file).
- Of special concern are the verification and validation of the integrity of the data (FITS files) distributed by the archive. The FITS File Integrity page presents a discussion of the issues involved, as well as the available tools and techniques.
- The Source naming convention, developed in consultation with the IAU Clearing House.
- There is a specific file naming convention for files in the ASC archive.
- All (or at least something) about Time and about Absolute Time in Chandra data products.
