Comparison of the mock catalog’s (orange) and 4FGL’s (blue) AGN properties with respect to four spectral parameters and the energy flux E₁₀₀ within the range from 0.1 to 100 GeV. The latter quantity is displayed in the upper left panel, while the flux density F_0, AGN is shown next to it. The remaining log-normal parameters are the pivot energy E₀ (middle left panel), spectral slope α (middle right panel) and the curvature β (lower left panel). The y-axis of the E₁₀₀-distributions is given in actual object numbers whereas the other four panels show the normalized distributions of the respective parameters.