Quality studies of the data taking conditions for the Auger Fluorescence Detector

Details Quality studies of the data taking conditions for the Auger Fluorescence Detector Quality studies of the data taking conditions for the Auger Fluorescence Detector

2005-07-06

arxiv.org/abs/astro-ph/0507132v1

Proceedings of the 29th International Cosmic Ray Conference, Pune, India (2005)

Astronomy and Astrophysics

Astrophysics

Poster to be presented at the 29th International Cosmic Ray Conference, Pune, India, 3-10 August 2005. 4 pages, 2 figures

Scientific paper

As more than half of the Fluorescence Detector (FD) of the Auger Observatory is completed, data taking is becoming a routine job. It is then necessary to follow strict procedures to assure the quality of the data. An overview of the data taking methods is given. The nature of the FD background signal is due to the night sky brightness (stars and planet faint light, moonlight, twilight, airglow, zodiacal and artificial light) and to the electronic background (photomultiplier and electronic noise). The analysis of the fluctuations in the FADC signal (variance analysis), directly proportional to the background mean light level, performed for each night of data taking is used to monitor the FD background signal. The data quality is analysed using different techniques, described in detail. Examples of trigger rates, number of stereo events, dead time due to moonlight, weather or hardware problems are given. The analysis comprises several months of data taking, giving an overview of the FD capabilities, performance and allowing a systematic study of data and their correlation with the environment.

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