Residuals of ROI in counts from the binned maximum-likelihood fit of the non-gated dataset (left), gated dataset (centre), and off-peak dataset (right). Positions of all sources are represented with white crosses, while the green and yellow diamonds indicate the position of γ² Velorum and the Vela pulsar, respectively. The residual for the non-gated dataset at the position of Vela is saturated for visualisation purposes of the rest of the ROI, in some some pixels reaching almost 5 × 10⁴ counts.