GIS and SIS Effective Area and Energy Resolutions

Effective area of one XRT+GIS for different off-axis (theta) and azimuthal (phi) angles

Effective area of one XRT+SIS for three standar pointing positions.

Energy resolutiong of GIS and SIS. For SIS, measured or estimated energy resolutions of SIS1 in the 1CCD mode are plotted for at launch and 1, 2, 3, 4 and 5 years after the launch. SIS0 resolution is degrading somewhat more slowly than that of SIS1. In 2 and 4 CCD modes, the RDD effect further degrades the resolution somewhat.