Flux density distribution for the full ATLASGAL CSC extracted by SExtractor (grey filled histogram) and the sources located in the 280° <ℓ< 330° and 21° <ℓ< 60° region (yellow). In the left and right panels we present histograms of the peak and integrated flux densities measured for each source, respectively. The dashed vertical lines shown in the left panel indicate the nominal 6σ sensitivity range above which the catalogue is considered complete (i.e., 0.3−0.5 Jy beam^-1). The red histogram shows the peak flux distribution of sources not matched with a source identified by the GaussClump catalogue. The bin width is 0.1 dex.