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

Transitioning to ChIPS and Sherpa in CIAO 4

The CXC is committed to helping CIAO users transition to the new ChIPS and Sherpa syntax as smoothly as possible. If you have existing scripts or save files from CIAO 3, submit them to us via the CXC Helpdesk and we will provide the CIAO 4 equivalent.

Please be sure to tell us if you are working in S-Lang or Python, and place the relevant data files on the FTP (FTP Instructions).

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

Welcome to CIAO
Introduction to the Tools & Applications

Platform Support

Download CIAO 4.1
Installing CIAO 4.1 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

Reprocessing III of Chandra Data

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

Manuals

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.

About this Website

The paper "The CIAO Website Unveiled" (ADASS XIV, 2004) describes the infrastructure of this website.