background_deviation_box¶

ccdproc.background_deviation_box(data, bbox)[source]¶

Determine the background deviation with a box size of bbox. The algorithm steps through the image and calculates the deviation within each box. It returns an array with the pixels in each box filled with the deviation value.

Parameters:

data : numpy.ndarray or numpy.ma.MaskedArray

Data to measure background deviation.

bbox : int

Box size for calculating background deviation.

Returns:

background : numpy.ndarray or numpy.ma.MaskedArray

An array with the measured background deviation in each pixel.

Raises:

ValueError

A value error is raised if bbox is less than 1.