Fluorescence Detector of the Pierre Auger Observatory: Operation and Data Quality Studies

With three operating fluorescence detector buildings and the last one under construction, data taking has become a routine job at the Pierre Auger Observatory. I will give an overview of the data taking procedure, including the operation of auxiliary systems for calibration and atmospheric monitoring. The analysis of the events during and after each measurement night is of paramount importance to assure the quality of the data and to monitor the detector behavior. Several analysis methods will be described.