Commissioning of the ATLAS Pixel Detector

The ATLAS Pixel Detector is the innermost detector of the ATLAS experiment at LHC. Approximately 80 million silicon sensors allow to detect particle tracks and secondary vertices with very high precision. The ATLAS Pixel Detector is now in its final commissioning phase. A full characterization and qualification of the detector is currently performed: calibration procedures, special DAQ runs for noise studies and combined operations with other ATLAS subdetectors using cosmic-ray events are ongoing. All the aspects of the detector operation including the DAQ system, the calibration procedures, and the first cosmic run results are summarized.