Speaker
Description
Accurate modeling of detector is essential for precision astronomical measurements and instrument design. We present PyXim, a Python simulation package designed to reproduce the behavior of HxRG CMOS detectors and ASICs at the pixel level, incorporating key noise sources and instrumental effects relevant to image analysis and photometry. The framework models the full signal chain, from photon and charge generation through photo- and sense-node conversion up to the ADC. Its modular architecture enables the setup of varying model complexity and fidelity. A strong effort is put on performance, relying on JAX as a compute backend, enabling the simulation to run on accelerators such as GPUs. Furthermore, automatic differentiation opens the door to full forward modeling for precision parameter inference from ramp data.
