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Last modified: 1 July 2019

URL: http://cxc.harvard.edu/ciao/caveats/index.html

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, use download_chandra_obsid or visit the Chandra Data Archive.

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


General

The current Calibration Group Homepage

ACIS

HRC

Aspect

PSFs

Issues affecting specific datasets