Speaker
Description
Detector performance typically accounts for a significant part of an instrument’s overall performance, and thus has a major impact on mission success. For missions like Euclid, which demand exceptional precision and accuracy in flux measurements, it is essential to minimize and control detector systematics as rigorously as possible. To achieve this, pre-launch ground characterization enables measurements that cannot be obtained in flight. Specifically, environmental and test conditions can be precisely controlled and varied to gain deeper insights into individual detectors—and even individual pixels. Beyond standard parameters like quantum efficiency (calibrated in flight), noise and dark current (regularly checked in flight), and non-linearity (corrected in flight), effects such as interpixel capacitance and persistence can also introduce biases in measured flux. These must be carefully accounted for in the data processing pipeline and will be discussed here.