Other Tools

In addition to the reformatting work tools will be required to make the Ginga data useful to astronomers. The main additional software that is required is: (1) Response matrix generator, and (2) Background subtraction. It is envisaged that these will be provided as "FTOOLS" (e.g. Pence et al. 1993). Response matrix generation has already been implemented by K. Ebisawa for use with XSPEC and it is expected that this software will be converted to an FTOOL. Background subtraction for Ginga is either done making use of source free regions of sky observed close to the target or by making use of relations between parameters such guard counter rates, time since SAA-passage and other factors which are correlated with the non-X-ray background (e.g. Hayashida et al. 1989).