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Matching CIAO and CALDB VersionsCIAO 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!
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. |
Timing AnalysisIn order to perform absolute timing analysis on a dataset, a barycenter correction must first be applied to the data. One may then create lightcurves and phase-binned spectra to look for variability in the source. These threads also provide information on working with data taken in the ACIS continuous clocking (CC) mode.
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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: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved. |
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