Distribution of the RMS of measured flux values in maps over the theoretical ones for each file in the full ALMACAL−22 and pruned samples. The pruned sample has a median of 1.8, reaching the imposed limit of 3, whereas the full sample’s median is 2.4. The full sample also includes large values in the hundreds, although we truncate the figure at a ratio of 10. It is necessary and important to remove problematic files that may compromise the final product once these files are combined.