Calibration utilities

Definition of the calibration interface.

calibration.calibration.apriorical(filename, sourcename, bandwidth, debias=True, remove_autocorr=True, SNR_cut=0.0, station_codes={}, return_coords=False, **kwargs)[source]

Read an alist data file and carry out a priori flux density calibration.

Parameters

  • filename (str) – The name of the input alist data file

  • sourcename (str) – The name of the source whose data to calibrate

  • bandwidth (float) – The bandwidth over which the data have been averaged, in GHz

  • debias (bool) – Flag for whether to debias the amplitudes stored in the alist file

  • remove_autocorr (bool) – Flag for whether to remove autocorrelations during calibration

  • SNR_cut (float) – SNR cut to apply

  • station_codes (dict) – Dictionary containing conversions between single- and multi-letter station codes

  • return_coords (bool) – Flag for whether to return RA and DEC of the source

Returns

pandas DataFrame containing the calibrated data and associated metainfo

Return type

(pandas.DataFrame)

calibration.calibration.argunique(array)[source]

Return the indices associated with the unique elements of an array. Analogous in spirit to functions like argmin and argsort.

Args: array (numpy.array): The array for which to return the unique-element arguments

Returns: (numpy.array): An array of arguments for each unique element

calibration.calibration.write_dlist(filename, sourcename, bandwidth, outname, debias=True, remove_autocorr=True, SNR_cut=0.0, station_codes={}, **kwargs)[source]

Write a “dlist” data file from an “alist” file.

Parameters

  • filename (str) – The name of the input alist data file

  • sourcename (str) – The name of the source whose data to calibrate

  • bandwidth (float) – The bandwidth over which the data have been averaged, in GHz

  • outname (str) – The name of the output dlist data file

  • debias (bool) – Flag for whether to debias the amplitudes stored in the alist file

  • remove_autocorr (bool) – Flag for whether to remove autocorrelations during calibration

  • SNR_cut (float) – SNR cut to apply

  • station_codes (dict) – Dictionary containing conversions between single- and multi-letter station codes

Returns

Writes a dlist file to disk