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XMM-Newton TTD Meeting - HK Monitoring
7th of February 2001 StИphane Rives

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HK Monitoring - Introduction
WHAT? Perform trend analysis on a set of significant pa rameters in order to improve knowledge of the in-flig ht behavior and spot possible failures. HOW? Using three type s of trend analysis files (SP EVAL machine at VILSPA) and tw o trend analy sis tools (under develo pment at VILSPA). WHEN? As soon as possible. Begi nning of May sho uld be a reasonable date.
VILSPA : 31st January 2001

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HK Monitoring - User Requirements
Type of information to be produced: · Statistics on one parameter value i n a specific operating mode and over fixed periods (2 we eks), cumulative periods (BOL up to now) or flexible perio ds (up to the user). Data produced: min, max, sigma and mean value. Type of output: ASCII files, graphs (*.GIF, *.JPEG, PostScrip t). · Statistics on the OOL occurrences of one parameter. Data produced: total number of OOL within n revol utions sorted by type (HL, HH, SL, SH). Type of Output: histograms, ASCII files.
VILSPA : 31st January 2001

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HK Monitoring - Implementation (1/3)
Basis: 3 Trend analysis files produced on the SPE VAL machine at Villafranca , as part of the products created during the normal CD production (all TM HK parameters according to the list produced in October 200 0).
1) MOSx/PN_STAT_REVnnnn.DAT: contains for the specified instrument, the statistical parameters of all the parameters plus the power consumption for revolution nnnn. 2) MOSx/PN_OOL_REVnnnn.DAT: contains for the specified instrument, the OOL information. 3) MOSx/PN_OOLSTAT_REVnnnn.DAT: general OOL statistics based on the results of the previous file.

VILSPA : 31st January 2001

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HK Monitoring - Implementation (2/3)
Creation of 2 Trend analysis tools to process these files 1) Automatic trend analy sis tool: · · Executed automatically as a batch job on a set of "essential" parameters to be defined. The execution frequency will be of:
2 weeks to retrieve the data from the EPIC trend analysis files for the last 2 weeks (7 revolutions) 3 months to retrieve the data from the EPIC trend analysis files from the beginning of the mission up to now.

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Output: statistical + OOL information as described previou sly. Data will be plotted automatically by the executi on of PV WAVE programs. Generation of files to enable the transfer to other systems.
VILSPA : 31st January 2001

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HK Monitoring - Implementation (3/3)
2) User trend analysis tool · General tool managed by the user, the SOE or the analy st to retrieve any set of data which is includ ed in the EPIC trend analysi s files. Total flexibility for the selected period of the analy sis Use of 2 configuration files (values to be retrieved, periods) PV-WAVE programs will read these files and produce p lots and histograms. A GUI is planned to be d eveloped as a final step . Same kind of output as the ones produced by the Automatic trend analysi s tool.
VILSPA : 31st January 2001

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HK Monitoring - Conclusion
· · Help of the EPIC special ists to define a set of 20 parameters per instrument for the automatic trend analysis tool Expected start date for the trend analy sis on EPIC: May 2001

VILSPA : 31st January 2001

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