After having read the WBS data with YODAT, you can get a light curve of the
count rate (counts/0.25 sec) of GRS-PC11, PC12, PC21 or PC22 with
UTPLOT. There are similar optional inputs to PLOT_HXSPC.
IDL> plot_grspcl,index,data,pc=[11,12,21,22]
IDL> plot_grspcl,index,data,pc=[11,12]
IDL> plot_grspcl,index,data,pc=[21,22]