Detector calibration software infrastructure at the European XFEL

High data rates produced by custom-built burst mode detectors available at the European XFEL present challenges for data processing. One crucial processing step required for subsequent analysis is detector calibration and data correction. We present an overview of the calibration and correction software infrastructure developed at the European XFEL to accommodate the specific needs at the facility. We discuss the distinction between offline and online processing, outlining the roles and interesting technical properties of calibration software in both contexts. Recent improvements to the online processing software allow for correcting full detector data stream in near real time, enabling more comprehensive online analysis methods for improved steering of experiments.