Completeness and flux-position accuracy in the catalog at 250 μm. In each panel, the field V1, V2, V3, and V4 are shown as solid, dashed, dotted, and dash-dotted line. Left panel: ratio between the numbers of objects detected and the number of sources injected. Middle panel: radial offset between the sources injected and the source recovered as a function of the input flux density. Right panel: logarithm of the ratio between the average recovered flux density and the input one, as a function of the injected fluxes.