RMF Utilities

nuskybgd.rmf.add_abs_fits(detabsfile, rmffile)[source]

[Placeholder] Add detector absorption to response matrix. Doing so may obviate the need for a separate ARF file. This function works with FITS files.

nuskybgd.rmf.add_abs_hdu(detabshdu, rmfhdu)[source]

Add detector absorption to response matrix. Doing so may obviate the need for a separate ARF file. This function works with FITS HDUs.

The input ‘rmfhdu’ is modified.

Use cases:

  • Add DETABS from CALDB to the RMF file from CALDB.

  • Add weighed DETABS to a user supplied RMF file.

Parameters

  • detabshdu (astropy.io.fits.BinTableHDU) – HDU with BinTable ‘DETABS’ containing absorption data.

  • rmfhdu (astropy.io.fits.BinTableHDU) – HDU with BinTable ‘MATRIX’ containing RMF data.

nuskybgd.rmf.add_weighted_abs(abshdus, weights, rmfhdu)[source]

Add absorption to an RMF, using given weights for the detectors.

The input ‘rmfhdu’ is modified in-place.

Parameters

  • abshdus (astropy.io.fits.HDUList) – e.g. CALDB DETABS FITS file

  • weights (list of float) – 4 values corresponding to the detector weights.

  • rmfhdu (astropy.io.fits.BinTableHDU) – A BinTableHDU with RMF data.

nuskybgd.rmf.detabs_hdu(abshdus, weights)[source]

Coadd absorption spectrum of the detectors using the given weights. The weights are normalized to unity before proceeding.

Use cases:

  • Get detector absorption weighed by area inside a source region.

  • Get absorption of a single detector by giving it 100% weight.

Parameters

  • abshdus (astropy.io.fits.HDUList) – e.g. CALDB DETABS FITS file.

  • weights (list of float) – 4 values corresponding to the detector weights.

Returns

A BinTableHDU ‘DETABS’ containing weighted absorption data.

Return type

astropy.io.fits.BinTableHDU