Study of the GRXE in 20 min (scale n = 6) in 4–10 keV. Top left: the two Lorentzian functions used to model the GRXE in Galactic longitude and latitude. Middle left: sky map of the points sources used to simulate the GRXE diffuse emission. Bottom left: shadow-gram in counts on the detector (only GRXE). Top right: shadowgram in counts (GRXE and CXB combined). Middle right: shadowgram after correction by quadratic fit. Bottom right: reconstructed sky image in S/N.