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Last modified: 15 November 2010


Data Caveats

This page contains warnings concerning the quality of data products in the Chandra Archive, grouped by instrument. For a more detailed description of the data products, visit the Data Products Guide.

All data received from the Chandra X-ray Observatory is processed through the standard data processing (SDP) pipelines at the Chandra X-ray Center. CIAO is designed for use with data with a processing version of "R4CU5UPD8" or "DS6.0.0" or higher; see the Note on Processing Versions for more information. To obtain the most up-to-date processing for a given observation, visit the Chandra Data Archive.

If you have any specific questions about your data, please email the Helpdesk.

The current Calibration Status Report
For data processed prior to DS6.9 (released August 2002) see this off-axis angle caveat




Last modified: 15 November 2010