Notes. Superscript indices specify whether a number refers to sources that are removed from the sample (‘r’) or kept in the sample (‘k’). $N_{\text{s}}^{\text{r}}$ is the total number of sources (from the full MASK ≤ 1 sample) that are flagged for removal by the selection s. $f_{\text{tot}}^{\text{r}}$ is $N_{\text{s}}^{\text{r}}$ expressed as a fraction of the full MASK ≤ 1 sample $\left(N_{\text{MASK }}^{\text{k}}\right).N_{\text{s},\text{run}}^{\text{r}}$ is the number of sources from the currently un-flagged population that are newly flagged after applying selection s (assuming flags are applied in row-order). $f_{\text{run }}^{\text{r}}$ is $N_{\text{s},\text{ run }}^{\text{r}}$ expressed as a fraction of the currently un-flagged population. $N_{\text{s},\text{ run }}^{\text{k}}$ is the number of sources remaining un-flagged after the flagging of selection s. $f_{\text{run }}^{\text{k}}$ is $N_{\text{s},\text{ run }}^{\text{k}}$ expressed as a fraction of the full MASK ≤ 1 sample.