Monitoring Tool for Digital Errors in the ATLAS Tile Calorimeter Readout

A software monitoring tools for easy visualization of digital errors that occurs during data taking in the Tile Calorimeter of the ATLAS experiment has been developed. This system is useful in keeping track of the performance over time as well as in making predictions about future failures. It can also correlate the digital errors with other problems, such as with power supplies, for diagnostic purposes. The ATLAS archive database is used to correlate the current digital error rates with the detector and data acquisition status. The results are stored locally so that users can monitor the evolution of error rates and localize problems. The system provides a flexible easy-to-use interface that can be accessed using a web browser.