Launched in July 2023, the Euclid satellite embarks on a mission to unveil the mysteries of the dark universe, probing the nature of dark energy and dark matter. At the heart of this quest lies the Near Infrared Spectrophotometer (NISP), tasked with measuring the spectroscopic redshifts of 40 million galaxies. Critical to NISP's success are 16 high-performance HgCdTe detectors, each housing a mosaic of 4 million hybrid pixels. Crucially, ensuring 95% operational pixel capacity and achieving sub-one-percent accuracy in flux measurement post-correction are imperative for NISP's scientific success.
My work addresses this challenge on two fronts. First, I develop methods to decorrelate various pixel response parameters, crucial for generating reference maps essential in correcting and processing flight data. Second, I conduct a spatial analysis of pixel response parameters to ensure the operational viability of 95% of the pixels. This comprehensive approach validates Euclid's precision requirements, advancing our understanding of the dark universe.