Chandra X-Ray Observatory
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Last modified: 13 December 2018


Chandra Interactive Analysis of Observations

from "s'sciavo", "I am your servant" in Venetian dialect*

I've never used CIAO before. Where should I begin?

Welcome to CIAO
Introduction to the Tools & Applications

Download CIAO 4.7
Installing CIAO 4.7 thread

Introductory Science Threads

Analysis Guides

Has a new version of CIAO or CALDB been released?
What has changed in the site recently?

What's New

"Watch Out" List

Version History

CIAO Release Notes

CALDB Release Notes

CIAO isn't working correctly - I need help!

CIAO Software Help Pages

Frequently Asked Questions (FAQ)

Known CIAO Bugs and Tool Caveats

CXC Helpdesk

I am an expert CIAO user. Where can I find more detailed information?

Why Topics


Scripting in CIAO

Citing CIAO in a Publication

If you are writing a paper and would like to cite the CIAO software, we recommend the following:

CIAO: Chandra's data analysis system (ADS, PS)
Fruscione et al. 2006, SPIE Proc. 6270, 62701V, D.R. Silvia & R.E. Doxsey, eds.

\bibitem[Fruscione et al.(2006)]{2006SPIE.6270E..60F} Fruscione, A., et 
al.\ 2006, \procspie, 6270

The specific version of CIAO and CALDB used for the analysis should be mentioned. Further guidelines are available from the Acknowledgment of Use of Chandra Resources.

Last modified: 13 December 2018
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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 © 1998-2019. All rights reserved.