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Copy over introduction from LateX User Manual
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doc/source/user_manual/introduction.rst
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| 1 | +Introduction | ||
| 2 | +============ | ||
| 3 | + | ||
| 4 | +ctools is a highly modular collection of utilities for processing | ||
| 5 | +and analysing CTA reconstructed event data in the FITS (Flexible | ||
| 6 | +Image Transport System) data format. Each utility presents itself | ||
| 7 | +as a FTOOL (see http://heasarc.gsfc.nasa.gov/ftools/) and performs | ||
| 8 | +a single simple task such as event binning, event selection or model | ||
| 9 | +fitting. Individual utilities can easily be chained together in | ||
| 10 | +scripts to achieve more complex operations, either by using the command | ||
| 11 | +line interface, or by using the Python scripting language. The ctools | ||
| 12 | +user interface is controlled by standard IRAF-style parameter files. | ||
| 13 | +Software is written in C++ to provide portability across most computer | ||
| 14 | +systems. The data format dependencies between hardware platforms are | ||
| 15 | +isolated through the cfitsio library package from HEASARC | ||
| 16 | +(http://heasarc.gsfc.nasa.gov/fitsio/). | ||
| 17 | + | ||
| 18 | +This User Manual describes the use of the ctools software. | ||
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