Since this is a run-time process, the following items may not exactly correspond to what you see. Count rates are given for a single GIS or a single SIS, as appropriate. The High and Medium events appear to have comparably excellent spectral resolution, while the Low grade events do suffer in this regard. The effective area curve is that for pixel A0.
All effective areas assume an on-axis observation.
All effective areas for the gratings are for both positive and negative orders summed together. The curves use the flight instrument chip layout of 4 FI and 2 BI chips. A single observation provides both spectra simultaneously in a cross-shaped orientation. Since the energy response and spectral resolution of the two grating assemblies differ, separation of the output may be important for some users. In all cases the output is for isolated first order.