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apply_noise(flux, flux_err) #108

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apply_noise(flux, flux_err) #108

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27 changes: 27 additions & 0 deletions src/tdastro/pipeline.py
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"""Utilities for running the simulation pipeline."""


import numpy as np


def apply_noise(flux, flux_err, rng=None):
"""Apply Gaussian noise to a flux measurement.

Parameters
----------
flux : ndarray of float
The flux measurement.
flux_err : ndarray of float
The flux measurement error.
rng : np.random.Generator, optional
The random number generator.

Returns
-------
ndarray of float
The noisy flux measurement.
"""
if rng is None:
rng = np.random.default_rng()

return rng.normal(loc=flux, scale=flux_err)
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