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LFI & SCS Operation Plan

LFI & SCS Operation Plan. Anna Gregorio University of Trieste and INAF – Osservatorio Astronomico di Trieste On behalf of the Planck LFI DPC-IOT and Planck SCS DPC-IOT (Gianluca Morgante). Overview. Operations Context Data processing Tele-commanding

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LFI & SCS Operation Plan

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  1. LFI & SCS Operation Plan Anna Gregorio University of Trieste and INAF – Osservatorio Astronomico di Trieste On behalf of the Planck LFI DPC-IOT and Planck SCS DPC-IOT (Gianluca Morgante)

  2. Overview • Operations Context • Data processing • Tele-commanding • Software maintenance, new software release, archive development • Nominal Operations • Routine Operations • Non-Routine Operations • Commissioning and CPV Operations See also Operation Plan PL-LFI-PST-PL-011 PL-LFI-PST-PL-011 ANNEX I

  3. Operation Context • Data Processing • LFI: SGS1 & SGS2 • SCS: SGS1 only (SCS data are considered HK) • Tele-commanding • Maintenance TC (re-setting TM counter) + ad-hoc TC to enhance LFI performance or better monitor the LFI • Software maintenance, new software release, archive development • SGS1 (LFI and SCS) & SGS2 (LFI only) • Support to MOC when necessary

  4. DPC-IOT Nominal Operations • Routine Phase Operations • Daily Operations (LFI & SCS) • Weekly Operations (LFI & SCS) • Monthly Operations (LFI & SCS) • End of Survey (Map Production) (LFI) • Component separation and optimization • Inter-comparison and cross-check • Non Routine Operations • LFI: • Planet Scanning • Small Gap • Recovery Operations • SCS: • Recovery Operations (in case of contingencies, at MOC or at DPC) • SCS switch-over (baseline, it is planned in advance) • Regeneration (NOT baseline, if needed can be planned in advance) • Commissioning and CPV • The operation timeline depends on the synergetic interaction of several activities involving the S/C, both instruments and SCS, that need to be finalized

  5. Daily Operations: automatic LFI & SCS • Download one observation day of consolidated data • Run SGS1 software: RTA, TQL, TMH • Check system health and performance: • LFI: Compute R and evaluate the knee frequency • SCS: compute heat lift and input power, evaluate high/low pressure and cold end T • Compare with HFI data (on demand) • Run the Time Series Analysis (TSA) – LIFE system: Trends, Data Quality, Flags 6. Compile the reports generated by LIFE into a Daily Quality Report (DQR) to be sent to PSO

  6. Daily Operations: DPC/IOT LFI & SCS • Check and transmit the information (DQR and uplink operations) towards the instrument and SCS: LFI Instrument procedure requests (maintenance TC & additional), calibration channel switching, small gap recovery requests, Instrument special procedure requests (REBA patching) (if needed) SCS LookUpTable update/upload (if needed) • Eventually provide support to the scientific team running the Quick-Alarm system for detection of flaring radio sources • First look for systematics, perform first-order calibration, cleaning, write processed “circles” • Comparison with HFI data when needed • Organize the daily meeting

  7. Daily Quality Report (OD) • Period covered by the report, Date/Time of report generation, Software tools version, Issuer of the report, Any relevant warnings or comments • LFI • Threshold NET (Noise Equivalent Temperature) • Data records for quality analysis parameters (per pointing): Pointing Reference, Axis positioning information, Dwell period start and end times, Science observation time • Transfer status to DPC of TM collected per detector • Dipole/Galaxy Response per detector • NET per detector, NET bandwidth per channel • Temperature sensors report (average T, drift, noise power, fluctuations, out of limits) • State vector (voltage and current report) • SCS (DQR is annex to the LFI one) • TMU health & SCE health (all sensors: T, P, V, I) • Cooler Status (Cycle Time, GGA’s timing, number of cycles) • Contingencies & Events (Diagnostic TM, Event Reports TM(5,1)) • SCS Primary (T, P, V, I) and Derived Performance Parameters vs requirements (Cold End T and PSD, Heat Lift, Mass Flow, Input Power) • Primary I/F’s status (Warm Radiator T, PC1, PC2, PC3abc T, HFI I/F T, LFI I/F T) • Any relevant warning or comment

  8. Delays in the timelines • Short Delays in DQR production • Glitches or Alarms • Limited in time, reprocessing of a chunk of data; • Bad sky subtraction • Reason to be understood, reprocessing of a chunk of data; • Bad point sources subtraction • Reason to be understood, reprocessing of a chunk of data • Additional Delays in the Operation Context (Data processing & TC) • Small Gap or a more general gap • Cause to be understood and then solved before implementing a correction; • Requiring a list of TC to be sent; • If not a trivial problem, it could be a long delay; • A minor problem or a required tuning • Requiring a list of TC to be sent; • HFI comparison • HFI data to be retrieved and then compared to LFI

  9. Weekly Operations • Read one week of consolidated raw LFI/SCS TOI from archive • Run TSA – LIFE for data checking and trend analysis • When needed, compare with HFI data • Perform initial “calibration” on data: • LFI • Iterative calibration of radiometers, 1-D evaluation of beam, Stray-light effects, Attitude reconstruction, Focal Plane reconstruction • SCS • Primary (T, P, Input Power) & derived (Heat Lift, Cold End T and PSD) parameters • Hydrides degradation • Possible LUT update evaluation • Map Making (temperature & polarization) • Compile the reports generated by TSA-LIFE trend analysis and daily reports into a Weekly Health Report (WHR) to be sent to PSO • Organize the weekly meeting

  10. Monthly Operations • Read one month of calibrated LFI/SCS TOI from archive • LFI: Build partial frequency maps and compare • SCS: Run trend analysis (primary and derived parameters) • Evaluate hydrides degradation • Evaluate possible variations to SCS Operation baseline • Possibly, run Level 3: • Component separation, Inter-frequency cross-checks on CMB maps, Component maps archive, Merge component maps • Cross-check LFI and HFI data • Retrieve HFI maps/power spectra, Cross-check LFI - HFI data, LFI/HFI optimization on component maps • Compile monthly data processing reports to be sent to PSO • Organize the monthly meeting

  11. DTCP ~ 3 hr GS to MOC ~ 5 hr Data @DPC ~ 3 hr SGS1 SGS11~ 8 hr SGS1f~ 10 hr SGS21~ 20 hr SGS2 LIFE ~ 10 hr Timeline 1/4 Operational Day (OD): 24 hr SGS1 SGS22~ 26 hr

  12. SGS2 Timeline 2/4: Mid case

  13. SGS2 Timeline 3/4: Extreme Late case

  14. SGS2 SGS2 Timeline 4/4: Extreme Early case

  15. Conclusions • Effort to implement as much as possible the LFI/SCS operations in an automatic way • For operations requiring DPC/IOT intervention, a person will always be in place • For contingencies, gaps or more in general for any alarm, a DPC/IOT responsible will be automatically informed to react as soon as possible • Routine Operations • Operations and timelines are in place • Quality reports are being implemented

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