integration_correction

ctapipe.image.extractor.integration_correction(reference_pulse_shape, reference_pulse_sample_width_ns, sample_width_ns, window_width, window_shift)

Obtain the correction for the integration window specified.

For any integration window applied to a noise-less unit pulse, the correction (returned by this function) multiplied by the integration result should equal 1.

This correction therefore corrects for the Cherenkov signal that may be outside the integration window, and removes any dependence of the resulting image on the window_width and window_shift parameters. However, the width and shift of the window should still be optimised for the pulse finding and to minimise the noise included in the integration.

Parameters

reference_pulse_shapendarray

Numpy array containing the pulse shape for each gain channel

reference_pulse_sample_width_nsfloat

The width of the reference pulse sample time bin in ns

sample_width_nsfloat

The width of the waveform sample time bin in ns

window_widthint

Width of the integration window (in units of n_samples)

window_shiftint

Shift to before the peak for the start of the integration window (in units of n_samples)

Returns

correctionndarray

Value of the integration correction for each gain channel