Bugs: acisreadcorr

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CIAO 3.4 Homepage
CIAO 4.1 Homepage
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Data Analysis: Analysis Guides; Science Threads; Sherpa Threads; ChaRT Threads; Why Topics; Help Pages (AHELP)
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S-Lang in CIAO
Documentation: "Watch Out" List; Bug List; Frequently Asked Questions (FAQ); Manuals; Dictionary; Chandra Publications; Software Survey Results
Download CIAO: Download CIAO 3.4; Platform Support; Release Notes; Version History; Analysis Scripts; CIAO Web Pages; Contributed Software
Data Products: Data Basics; Data Products Guide; Data Caveats; Reprocessing III; Pipeline Processing (SDP); Chandra Archive
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CXC Links: CALDB; ATOMDB; WebGUIDE; ChaRT; Astrostatistics Collaboration; CXO Cross-calibration Page
Site Map

Matching CIAO and CALDB Versions

CIAO 3.4 requires CALDB 3.3.0 or higher to operate properly.

CALDB 3.4.0 and higher should not be used unless you are running CIAO 3.4 or CIAO 4.0.

Are your versions mismatched? Time to update CIAO and CALDB!

News Previous Items

11 Nov 2008

These are the webpages relative to the CIAO 3.4 release (18 December 2006). They are no longer actively updated, however the CXC will continue limited support of CIAO 3.4 for the near future.

CIAO 3.4 users should check the CALDB 3 website for compatible calibration updates.

15 Dec 2008

The newest version of the Chandra Interactive Analysis of Observations software, is CIAO 4.1, released on 15 December 2008. Read the release notes for detailed information. This release requires that CALDB 4.1.0 be installed for the software to work correctly.