Fermi-LAT dataset description for the first selected night. From top left to bottom right: (a) Integral counts map, smoothed with a Gaussian kernel of 0.2°. (b) Initial model map, convolved with the IRFs (npred map). (c) 68% and 95% containment radius as a function of energy. (d) Energy dispersion (reconstructed energy as a function of true energy). (e) Exposure map at 10.6 GeV. (f) Exposure at the FoV center as a function of true energy.