χ² (top) and residual maps, d_ν−s_ν (bottom), for a Commander analysis that includes all Planck channel maps. These residual maps correspond to channels that are rejected from the baseline analysis due to instrumental systematics; the labels in the top left corner in each panel indicates frequency channels. No regularization noise has been added to the high-frequency channels in this case. The sharp ring-like features at high Galactic latitudes correspond to far sidelobe residuals; the broad features extending between the north and south ecliptic poles correspond to destriping errors; and the Galactic plane features correspond to calibration, bandpass, and modelling residuals. All maps (and all other full-sky plots later in the paper) are shown in Galactic coordinates adopting a Mollweide projection with the Galactic centre (l = 0deg) located in the centre of each panel.