ACIS Data Analysis

• The Chandra data archive contains all of the Chandra data which have been processed by the CXC. Most observations are proprietary for one year, after which they become public.
• WebChaSeR is an online tool to search and download Chandra data. See also the CIAO thread showing additional methods for downloading data from the archive.
• CIAO is the suite of tools for analysis of Chandra data provided by the CXC.
• DS9 can be used to display Chandra data. DS9 is packaged as a part of CIAO. If you have CIAO installed you do not need to download DS9.
• FTOOLS is the suite of tools provided by the HEASARC to analyze X-ray data.
• Standard Data Processing is the "pipeline" reduction that is performed on all Chandra science data.
• The CIAO ACIS Data Preparation Analysis Guide is the first place to start if you have ACIS data.
• The HRMA User's Guide gives a detailed description of the Chandra PSF on and off axis.
• Chandra ASPECT gives information on absolute astrometry and image reconstruction.

ACIS Data Products

• An Introduction to Data Products gives a description of the data files in a typical Chandra observation.
• Data Products Basics gives an introduction to file formats, software versions and calibration products.
• The Data Products Guide gives descriptions of all files created by standard processing.
• The Calibration Database contains the latest calibration files. CALDB files are in standard FITS format and designed for use in CIAO and other analysis programs.