Plot solutions

hyperdrive is capable of producing plots of calibration solutions for any of its supported file formats. Note that only hyperdrive-formatted calibration solutions can contain tile names; when tile names are unavailable, they won't be on the plots unless a corresponding metafits file is provided. With or without tile names, an index is provided.

By default, a reference tile is selected and reported at the top left of the plot. (By default, the last tile that isn't comprised of only NaNs is selected, but this can be manually chosen.) It is also possible to neglect using any reference tile. With a reference tile, each tile's solutions are divided by the reference's solutions, and the resulting Jones matrix values are plotted (the legend is indicated at the top right of each plot). \( g_x \) is the gain on a tile's X polarisation and \( g_y \) is the gain on a tile's Y polarisation. \( D_x \) and \( D_y \) are the leakage terms of those polarisations.

By default, the y-axis of amplitude plots capture the entire range of values. These plots can therefore be skewed by bad tiles; it is possible to control the range by specifying --max-amp and --min-amp.

If a calibration solutions file contains multiple timeblocks, plots are produced for each timeblock. Timeblock information is given at the top left, if available.

Example plots

Amplitudes ("amps")

Phases