Point source completeness, or fraction of simulated sources detected above some S_I limit, of LoTSS-DR2 for genuinely point-like sources (top) and for real point-like sources as defined from their recovered deconvolution models (bottom). Each red line shows the completeness derived from approximately 370 000 sources that are injected into each of the 841 DR2 mosaics through a series of 10 simulations with realistic source density and flux density distributions. The overlaid grey points represent the mean between the different mosaics weighted by the area covered by the mosaics and the error bars show ± the standard deviation of the different mosaic values. Due to the number of sources injected into the maps the Poisson errors are negligible by comparison. The fraction of sources detected at a given flux density are also shown with blue lines where grey points again show the corresponding weighted mean values as a function of flux density.