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measure_curve_of_growth

gammapy.image.measure_curve_of_growth(image, position, radius_max=None, radius_n=10)

Measure the curve of growth for a given source position.

The curve of growth is determined by measuring the flux in a circle around the source and radius of this circle is increased

Parameters:

image : astropy.io.fits.ImageHDU

Image to measure on.

position : SkyCoord

Source position on the sky.

radius_max : Quantity

Maximal radius, up to which the containment is measured (default 0.2 deg).

radius_n : int

Number of radius steps.

Returns:

radii : Quantity

Radii where the containment was measured.

containment : Quantity

Corresponding contained flux.