Teledyne H1RG, H2RG, and H4RG Noise Generator

TL;DR

This paper introduces a Python-based noise generator for near-infrared detectors used in space telescopes, simulating various noise components to aid in astronomical data analysis.

Contribution

It presents a comprehensive noise simulation tool for Teledyne's H1RG, H2RG, and H4RG detectors, including detailed noise components relevant for JWST observations.

Findings

Simulates multiple noise types including pink and 1/f noise

Adjustable parameters for different detector configurations

Open-source code available for community use

Abstract

This paper describes the near-infrared detector system noise generator (NG) that we wrote for the James Webb Space Telescope (JWST) Near Infrared Spectrograph (NIRSpec). NG simulates many important noise components including; (1) white "read noise," (2) residual bias drifts, (3) pink $1/f$ noise, (4) alternating column noise, and (5) picture frame noise. By adjusting the input parameters, NG can simulate noise for Teledyne's H1RG, H2RG, and H4RG detectors with and without Teledyne's SIDECAR ASIC IR array controller. NG can be used as a starting point for simulating astronomical scenes by adding dark current, scattered light, and astronomical sources into the results from NG. NG is written in Python-3.4. The source code is freely available for download from http://jwst.nasa.gov/publications.html.