make_map_background_irf

gammapy.cube.make_map_background_irf(pointing, ontime, bkg, geom, oversampling=None)[source]

Compute background map from background IRFs.

Parameters:
pointing : FixedPointingInfo or SkyCoord

Observation pointing

  • If a FixedPointingInfo is passed, FOV coordinates are properly computed.
  • If a SkyCoord is passed, FOV frame rotation is not taken into account.
ontime : Quantity

Observation ontime. i.e. not corrected for deadtime see https://gamma-astro-data-formats.readthedocs.io/en/stable/irfs/full_enclosure/bkg/index.html#notes)

bkg : Background3D

Background rate model

geom : WcsGeom

Reference geometry

oversampling: int

Oversampling factor in energy, used for the background model evaluation.
Returns:
background : WcsNDMap

Background predicted counts sky cube in reco energy