As many of the quality checks described above can only be done after an initial
run of rgsproc, a decision will be often be made to rerun the
analysis with some adjustments. It might not be necessary to rerun the
whole of rgsproc, which is divided into five different stages that
are alternative entry and exit points. Figure 38
lays out how individual tasks are grouped within the five stages.
For example, the background
GTI file made above would properly be incorporated
at the filter stage as follows
rgsproc auxgtitables=RGS2.background.GTI.FITS \ entrystage=3:filter finalstage=5:fluxingA similar approach could be used to generate spectra as a function of intensity using the source light curve of figure 42. Other examples involving further runs of rgsproc for multiple or extended sources are discussed below.