estimate_noise

sitelle.utils.estimate_noise(full_axis, full_spectrum, filter_lims, side='both')

Estimates the noise in an integrated spectra from sitelle, by measuring it outside of the filter range.

Parameters:

• full_axis (1D ndarray) – complete wavenumber axis of the cube
• full_spectrum (1D ndarray) – spectrum on this full axis
• filter_lims (tuple of floats) – limits of the filter range (in wavenumber)
• side (str) – (Optional) if ‘right’ (‘left’), only the right (left) side of the filter is considered. Default to ‘both’

Returns:

std – the standard deviaition of the signal outside the filter range, i.e. basically noise

Return type:

float