CIAO

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Description

CIAO is a data analysis system written for the needs of users of the Chandra X-ray Observatory. Because Chandra data is 4-dimensional (2 spatial, time, energy) and each dimension has many independent elements, CIAO was built to handle N-dimensional data without concern about which particular axes were being analyzed. Also, apart from a few Chandra instrument tools, CIAO is mission independent.

All commands that are available from shell can be called even after import of specific package(`run_tools`) in python, which is part of instalation. There is available library "crates" for work with FITS files (including enhanced manipulation with spectral files and calibration matrix. Library *Chips* provide grafical output and even have own shell like Sherpa.

Availability

Instalation script can be downloaded from adress http://cxc.harvard.edu/ciao/download/. This script afterwards provide download of other components including calibration database and eventually run instalation tests.

Use

Calibration database can be found in /software/ciao-xx.x/CALDB. Data from observations of specific objects can be obtained by WebChaSeR [1]. Structure of locale stored data is not yet united, every user creates his own archive.

Documentation

Basic procedures are well illustraded threads.

Specter filtration with Sherp is described here: http://cxc.cfa.harvard.edu/sherpa/index.html

Program manager

Filip Münz, Matúš Kocka, Tomáš Rebok (meta@cesnet.cz)

Homepage

http://cxc.harvard.edu/ciao/