CIAO users who are trying to detect sources of about 10
counts or less should be aware of potential confusion with
cosmic-ray afterglows that have not been removed from the
data.
The Cosmic-Ray Afterglows why
topic explains the limitations of the current tools
and describes analysis tips to help eliminate more of the
afterglows.
Chandra and CIAO use a number of specialized terms, some of which are
common in X-ray astronomy data analysis, but not used elsewhere, and
some of which are specific to CIAO.
Here we provide a dictionary of these terms. We have provided
links to more information in the CIAO
webpages, on the CXC site
in general, and in external webpages as appropriate, making the
dictionary a handy place from which to explore. Help on the
CIAO tools is available from the ahelp
documentation page.
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