Relative star count differences between Gaia DR1 and the GOG18 simulation in different magnitude bins, from 12 < G < 13 to 19 <G < 20 in steps of one magnitude in galactic coordinates. In addition to the prominent feature of the Magellanic Clouds (absent from the Galaxy model) and inadequacies of the 3D extinction model in the Galactic plane, the Gaia incompleteness around the ecliptic plane due to the scanning law becomes clear at G > 16.