NoiseMap

class sofia_redux.scan.source_models.maps.noise_map.NoiseMap(observation=None)

Bases: Overlay

Create a noise map overlay of an observation.

The exposure map overlay returns and operates on the weight image of the Observation2D basis in terms of noise.

Parameters:

observationObservation2D, optional

The observation map from which to generate a noise map.

Attributes Summary

data	Return the noise values as calculated from the basis weight.

Methods Summary

set_default_unit()

Set the default unit for the map data.

Attributes Documentation

data

Return the noise values as calculated from the basis weight.

The noise values are calculated as:

noise = 1 / sqrt(weight)

Returns:

noise_valuesnumpy.ndarray

Methods Documentation

set_default_unit()

Set the default unit for the map data.

Returns:

None