Author: Costa, A.
Paper Title Page
Monitoring, Logging and Alarm Systems for the Cherenkov Telescope Array: Architecture and Deployment  
  • A. Costa, E. Sciacca
    INAF-OACT, Catania, Italy
  The Array Control and Data Acquisition System (ACADA) is responsible for the telescope control operations in The Cherenkov Telescope Array (CTA). We present the software architecture of the Monitoring, Logging and Alarm subsystems in the ACADA framework. The Monitoring System (MON) is the subsystem that addresses the acquisition of the monitoring and logging information from the CTA array elements. The MON will also support corrective and predictive maintenance to minimize the downtime of the system. The Array Alarm System (AAS) is the subsystem that is responsible for collecting alarms from telescopes, array calibration and environmental monitoring instruments, and the ACADA systems itself. The final software deployment is expected to manage about 200.000 monitoring points sampled between 1 and 5 Hz for a maximum data rate for writing operations of 26 Mbps for the monitoring system including the alarms, and a maximum rate of about 1 Gbps for the aggregated log information. This paper presents the architecture and deployment for MON and AAS subsystems which are currently being tested with a simulated set of monitoring points and log events.  
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