ASTRI instrument response functions (angular resolution, effective area, and background rate) at different offset angles from the centre of the FoV. In the left side, the IFRs are shown as a function of energy; in the right side, the degradation of the IRFs across the FoV is shown at a fixed energy of 10 TeV, where the responses are normalised to the value at the centre of the field. The legend applies to all panels.