post_processing module

Contains functions for post-processing of covariance matrices/blocks.

post_processing.bin_blocks(input_dir, input_filemask, input_label, binmat_path, output_dir)

Apply a binning matrix to all covariance blocks inside the input directory matching the input filemask.

Parameters

  • input_dir (str) – Path to input directory.

  • input_filemask (str) – Glob filemask for input files within input directory (excluding path to directory).

  • input_label (str) – Label for covariance block within input .npz file. Should be ‘cov_block’ for Cov_G blocks output by gaussian_cov.get_cov_blocks, or ‘cov_mixed’ for the output from mix_blocks.

  • binmat_path (str) – Path to binning matrix.

  • output_dir (str) – Path to output directory.

post_processing.combine_blocks(input_filemask, input_label, save_path, n_spec, n_bp)

Combine covariance blocks into a full covariance matrix.

Parameters

  • input_filemask (str) – Filemask for input blocks, with {spec1} and {spec2} placeholders for the indices of the two power spectra.

  • input_label (str) – Label for covariance block within input .npz file. Should be ‘cov_binned’ for output from bin_blocks.

  • save_path (str) – Path to save output covariance matrix to.

  • n_spec (int) – Total number of power spectra.

  • n_bp (int) – Number of bandpowers.

post_processing.get_composite_covs(cov_g_path, cov_ss_path, cov_cng_path, output_path)

Form composite covariances from different combinations of G, SS and CNG, and save to disk.

Parameters

  • cov_g_path (str) – Path to Gaussian covariance.

  • cov_ss_path (str) – Path to super-sample covariance.

  • cov_cng_path (str) – Path to connected non-Gaussian covariance.

  • output_path (str) – Output path, with {label} placeholder which will be replaced by g, g_ss, g_cng or tot.

post_processing.get_mixmat(mask_path, nside, lmax_mix, lmax_out, save_path)

Produce the EE->EE mixing matrix for a given mask.

Parameters

  • mask_path (str) – Path to mask fits file, or set to None for full sky.

  • nside (int) – Healpix map resolution to use - input mask will be up/downgraded to this resolution.

  • lmax_mix (int) – Maximum l to include mixing to/from.

  • lmax_out (int) – Maximum l to support output to.

  • save_path (str) – Path to save mixing matrix as a .npz file.

post_processing.mix_blocks(input_dir, input_filemask, mixmat_path, output_dir, lmin, lmax_in, lmax_out)

Apply a mixing matrix to all covariance blocks inside the input directory matching the input filemask.

Parameters

  • input_dir (str) – Path to input directory.

  • input_filemask (str) – Glob filemask for input files within input directory (excluding path to directory).

  • mixmat_path (str) – Path to mixing matrix.

  • output_dir (str) – Path to output directory.

  • lmin (int) – Minimum l in input covariance blocks.

  • lmax_in (int) – Maximum l in input covariance blocks.

  • lmax_out (int) – Maximum l in output.