Results of the quality assurance for the high level trigger applications for the ALICE TRD

The ALICE experiment has finished its first year of the search of the Quark-Gluon-Plasma. During its operation each detector of the experiment is continuously producing large amounts of raw data, e.g. 2.5GB/s in the case of the Transition Radiation Detector (TRD). The data of the main ALICE detectors is analyzed online by a High Level Trigger system (HLT). The HLT performs a fast first analysis of the data and preselects interesting or rare events thus the data volume is reduced to a suitable size for the Data Acquisition system (DAQ). This talk will present the results of the Quality Assureance for the HLT analysis of the ALICE TRD, as compared to both, the offline analysis of real and simulated data. The understanding of variations is crucial for implementing reliable physics triggers.