Chandra X-Ray Observatory
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Last modified: 26 October 2016

Instrument Maps

A Chandra instrument map includes detector quantum efficiency (QE) and non-uniformities across the face of a detector (QEU), mirror (HRMA) vignetting, and bad pixels (including those at ACIS node boundaries). The instrument map is used to create an exposure map.

The CIAO tool mkinstmap is used to generate instrument maps for Chandra data, as illustrated in the CIAO Imaging Threads.

Last modified: 26 October 2016
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The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email: Smithsonian Institution, Copyright © 1998-2016. All rights reserved.