Completeness (computed on a restricted sample of sources with injected temperature below 17 K) as a function of the injected flux density in the IRAS 3 THz (top left panel) and Planck upper frequency bands, 857 GHz (top right panel), 545 GHz (bottom left panel), and 353 GHz (bottom right panel). It is shown per-category of flux density quality, i.e., FQ = 1, 2 and 3 categories (blue, green and pink, respectively). The completeness is also computed on a more restricted sample of sources with injected temperature below 17 K and with a flux density accuracy better than 50% (dashed lines).