Processing flow for the different visibility products used to obtain the compression residual noise, thermal noise, and solver noise power spectra displayed in Figs. 2 and 3. The flow of compressed and uncompressed data is indicated in blue and red, respectively, while different residuals are shown in green. Overlapping panels imply steps carried out multiple times on different datasets or on the same dataset). The two curved lines represent the thermal noise variance obtained as the difference of even-odd timestep image data. The exact details involved in each step are described in the text.