CDF Event Monitoring System and Operation

The foundation of the CDF Run II online event monitoring framework was implemented well before the start of the physics runs, allowing development of a coherent monitoring software across all the subsystems, consequently making maintenance and operation simple and efficient. Only one shift person is needed to monitor the entire CDF detector, including the trigger system. High data quality is assured in real time and well defined monitoring results are propagated coherently to offline data sets used for physics analysis. We describe the CDF Run II online event monitoring system and operation, including the remote monitoring shift operation started in November 2006.