Results from the commissioning of the ATLAS Pixel detector with cosmic ray data

ATLAS is a general purpose detector designed to exploit the discovery potential of the Large Hadron Collider (LHC) at CERN, which was designed to provide proton-proton collisions at a centre of mass energy of 14 TeV. A fundamental part of the detector is the tracking system, whose innermost component is the Pixel detector. After the successful installation of the Pixel detector in June 2007, an intense commissioning period began, culminating in the cosmic muon data taking during Autumn 2008. The commissioning activity is presented in this paper, showing results from calibrations and measurements such as the Lorentz angle and the efficiency. The present status of the detector alignment is also described.