The content of a dump

A dump contains a data header (called DAPS, Data Associated ParametersS, in CLASS ) and the data themselves. The data header is used to store metadata that vary on the second basis (in opposition to metadata stored in the observation header), such as the uv coordinates, wvr counts, cable phase, etc. It is important to note that the data flags are stored in the data header. The continuum data are then stored along the axis $(spectral window, sideband, baseline)$. Optionally (see above), line data are then stored along the axis $(channel,sideband,baseline)$, with spectral windows all stitched together in the $channel$ axis.