CIAO 4.0 is a full installation of the CIAO
software, including ChIPS and Sherpa (Beta). Refer to the
CIAO 4.0 website and
release
notes for full details.
14 Dec 2007
CALDB 3.4.2 has been released for use with CIAO 3.4 and
CIAO 4.0.
When Chandra data goes through Standard
Data Processing (SDP), the most recently
available calibration is applied to it. Since this
calibration is continuously being improved, one should check
whether there are currently newer files available. Similarly,
some science decisions are made during SDP; every user has the
option to reprocess the data with different parameters.
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