5.2.2 HXS Spectral Display (single power law fitting)

A single power law fit to the HXS data can be obtained by executing:
IDL> hxs_sp1,data,index
  The steps you should follow are:

1. First, a small menu window will pop-up on the screen.
2. There are four menu items
   • Select background time
   • Select flare time
   • Print out this result
   • Exit
3. You select the background time first. A rough HXS light curve will pop-up where you can determine the start and end time of the background necessary for the spectral analysis.
4. Next, when you click the second menu item, then the rough HXS light curve will pop-up again where the time interval in the flare needed for the spectral fitting analysis can be selected by left and right button on the mouse.
5. If the result is not satisfactory or several spectra are needed, you can repeat the first or second menu item.
6. When hard copies are necessary, you can click the third menu item.

NOTE: You must be careful of the limitations of the instrument. Spectral distortion occurs when the deadtime-corrected counts of total PH exceeds about 21,000 counts/sec. It is difficult to correct the spectral distortion (see DTCF_PH_HXS.PRO in the Reference Guide).