1. TRENDS ANALYSIS OVERSIGHT Dan Schwartz Development and Operations Science Support/ Technical Support Team 12 January 2004 CXC Users Committee SOT/DAS

2. OUTLINE  MISSION STATEMENT  OVERSIGHT ISSUES  IMPLEMENTATION PLANNING 12 January 2004 CXC Users Committee SOT/DAS

3. MISSION STATEMENT “(7)Monitoring and Trends Analysis – The CUC recommends that the CXC provide a higher level of oversight to the SI performance monitoring and trending analysis program to ensure that appropriate performance quantities are being tracked.” GOAL: Identify ANY changes in instrument performance before they occur. (Walkthrough example: ACIS gain) 12 January 2004 CXC Users Committee SOT/DAS

4. ISSUES Technical:  Identification of specific, potential, changes  Identification of indicators for each such change  Calculation of quantities to provide the indication (the trended quantity)  Assessment of the sensitivity of the trended quantity to Instrument change  What quantities must be determined more precisely (than currently), so that we are sensitive to any changes? 12 January 2004 CXC Users CommitteeSOT/DAS

5. ISSUES CONT… Software:  Database review  Report generation  Correlations and predictions Organizational:  Who is the monitor of each quantity?  How does the software get developed?  How do we educate CXC to use the existing tools? 12 January 2004 CXC Users Committee SOT/DAS

6. IMPLEMENTATION PLAN  Team is drawn from DOSS, CAL, SI IPI teams, FOT, project-wide  Divide by subsystems:  ACIS  HRC  LETG  HETG  HRMA  ACA  Other PCAD (e.g., IRU, fid lights and transfer, mounting stability, FSS  Other spacecraft equipment (e.g., reaction wheels, jitter stability, optical bench, focus and translation, EPHIN)  Other infrastructure (e.g., ACE, GOES, internet connectivity)  List the quantities which may change  Make two rank orders for each subsystem  Likelihood of occurrence  Effect of occurrence  Group assesses what can/must/should be monitored KEY POINT: One person responsible for each identified quantity. 12 January 2004CXC Users Committee SOT/DAS