CAA PEACE Status Iryna Rozum, Andrew Fazakerley, Natasha Doss, Andrew Lahiff, Yulia Bogdanova, Branislav Mihaljčić & the PEACE ops team MSSL 12 th Cross-Calibration Meeting, Toulouse, France, October 2010

Layout MSSL Calibration progress summary Progress since last cross-calibration meeting Status of PEACE dataset delivery Open issues Future delivery plan Action Items status

Calibration Progress Summary MSSL Calibration v 6.0 currently applicable for Nov 2004 – end 2008 incorporates new alpha-factors obtained from WHI-PEA density comparison studies, but does not include inter-anode calibrations. Calibration v 5.9 applicable for 2009 only alpha-factors are based on the last day in 2008 and adjusted to take into account MCP levels variations, does not include inter-anode calibrations. we are currently working on deriving 2009 alpha-factors from WHI-PEA comparison studies to produce calibration v6.0 for WHI and EFW data for 2009 are incomplete which prevents us producing v6.0 calibrations for the whole year. Calibrations v 6.1 will be available in future uses v6.0 alpha factors plus inter-anode calibrations

Progress Since the Last Meeting MSSL Production priority given to key datasets: MOMENTS, PITCH_SPIN and 3DR datasets were produced with calibration v datasets were produced with calibration v5.9 We expect to have good densities in , but not velocities, therefore MOMENTS for have Status_Quality = 2. NOTE: inter-anode calibration correction factors affect high order moments significantly, but are usually quite small, so we do not expect other datasets, eg. 3DR, to be much affected going from v6.0 to v6.1. CL-1,2,3, key datasets will be re-generated and re-delivered once calibration v6.1 is complete. CL-3, datasets will also be re-delivered with new v6.1 calibrations.

Progress Since the Last Meeting MSSL Development of status information for MOMENTS & PITCH-family products has been on hold while we focus on 2008/2009 calibrations Algorithms for Status_PitchAngleCoverage and Status_PADSelectionQuality are complete – flags will be produced after new calibrations release Status_PartialCoverage – work on this will resume after new calibrations release Significant progress has been made on Status_CountStats (shows risk of undercounting or low statistics), currently we are trying to simplify the algorithm to speed up production. Once status data is validated, a timetable will be planned for the insertion of status quality flags into relevant data product files. Some already delivered data will need to be redelivered with the quality flags added.

Progress Since the Last Meeting MSSL CAVEAT files have been produced and delivered to the CAA from 2001 till end of Daily CAVEAT files contain information about various problems with the data such as: Science Data Loss: All instruments affected by a spacecraft / ground segment Issue Science Data Loss: PEACE affected by a spacecraft / ground segment Issue or internal problem Caution: Science data: PEACE onboard data handling problem Caution: Science data: IEL related PEACE onboard data handling issue Caution: Science data: PEACE MCP problem Caution: Science data: Penetrating radiation background Information: Spacecraft event Information: PEACE operational MCP level change Information: PEACE real-time operations Information: PEACE eclipse operations on one or more spacecraft We have generated CSDS products affected by calibration updates – these are being delivered to CSDS now.

PEACE CAA Data Product Delivery Status MSSL NOTE 1. PITCH_SPIN from to will be delivered for all spacecraft after IDFS PAD data will be fixed. NOTE 2. Products for 2009 produced but not delivered yet: PITCH_SPIN & MOMENTS NOTE 3. 3DR, 3DX(P), PITCH_SPIN, MOMENTS generated with calibrations v5.2 NOTE 4. MOMENTS, 3DR, PITCH_SPIN 2008 generated with calibrations v6.0, 2009 generated with calibrations v5.9. NOTE 5. MOMENTS had to be re-generated and re-delivered prior to delivering 2007 and later data in order to use the same HEADERS. grey boxes: products produced but not delivered

PEACE CAA Data Product Delivery Status MSSL NOTE 1. PADLAR and PADHAR generated with calibrations v5.2 NOTE 2. Products for produced but not delivered yet: PADMAR sc1,2,3,4 (old PADMAR data was delivered for ) NOTE 3. NOI and LER data are in the production stage grey boxes: products produced but not delivered OR in the production stage

PEACE CAA Data Product Delivery Status MSSL NOTE: these Status datasets are in delivered files already.

PEACE CAA Data Product Delivery Status MSSL NOTE 1. the following Status datasets are NOT in delivered files: Status_PADSelectionQuality & Status_PitchAngleCoverage NOTE 2. Further work needed to link the Quality flag to PEACE status parameters. NOTE 3. Definition of Status_FGM is updated but not yet inserted into.cef files grey boxes: products produced but not delivered

Issues affecting the quality of the PEACE dataset PEACE-centric C3-HEEA bad anode (from August 2005) Penetrating radiation during some perigee passes Further study of how to maximise quality of onboard moments Investigate if bit-flipped data can be recovered Issues where help from other teams will be valuable WHISPER densities for the second part of 2009=> needed to support work to establish an MCP sensitivity history for C3 and C4 PEACE sensors Funding issues STFC funding will end in December Funding after that is currently uncertain. CAA contract expires November Extension is not yet in place. MSSL Open Issues

Future Plans MSSL 1.Calibration inter-anode calibration 2008 – 2009 for v6.1 inter-anode calibration 2004 – 2007 for v6.1, extend v6.1 to 2000 – Short-term deliveries complete 2008 – 2009 key datasets with calibrations v6.0 (2008) & v5.9 (2009) when calibration v6.1 available (2008 – 2009) and PITCH_SPIN HAR/LAR correction available regenerate and deliver key datasets regenerate and deliver remaining datasets with calibration v6.1 3.Status parameter completion. 4.Redeliver 2000 – 2009 with v6.1 and status parameters. 5.If contract extends, work on 2010 data.

Status of Action Items MSSL CC8-AI-22 to CIS/PEACE (due date: 10 th Cross-Cal): to include a quality factor to their moments data to filter out poor quality data, e.g., when only noise is observed by CIS due to low ion flux measurements, when one can assume strong noise from photoelectrons in PEACE, etc. The quality factor needs to be specified also in the user guide IN PROGRESS The top level PEACE flag Status_Quality conforms to the CAA MDD definition of Quality and this is spelled out in UG. Status flags for interference from WHISPER and EFW have been implemented Status PartialCoverage quality flag will flag moments to show if the energy distribution is fully captured or not. Status CountStats will warn of inadequate counts for good statistics, or excessive counts risking sensor saturation. The last two flags are still in development (but a lower priority than calibration and dataset delivery tasks). NOTE: Grey shaded AIs were closed at the last operational review (OR) in May 2010.

Status of Action Items MSSL CC8-AI-24 to PEACE (due: 31 Jan 2009): to investigate the EFW comparisons and to explain the particularly large deviations during the events on pages 25, 26, 28, 33, 34, 37, 42, 43, 45, 47 (see plots in document CrossCal8-Annex5-EFW) OPEN (no recent work) We have checked individual intervals for photo-electron contamination, which can give discrepancies observed by the EFW, in the PEACE data delivered to the CAA by comparing PEACE and WHISPER densities. We obtained excellent agreement between PEACE and WHISPER densities which means that there is no photo-electron contamination. PEACE Spectra were inspected using the same settings as used to calculate moments for CAA and there was no evidence of photoelectrons in the energy range used for the moments. Detailed examination of the data revealed a time aliasing effect between the two PEACE sensors, resulting in distorted moments. Many of the events highlighted by the EFW team show evidence of this time aliasing between the LEEA and HEEA sensors. Other cases have not been examined carefully yet, but not all can be explained by time aliasing. Investigation is in progress, some results were presented at the 9th Cross-Calibration meeting.

MSSL CC8-AI-31 to PEACE (due 31 Aug 2009): to clarify the definition of Quality Flag, i.e., when does the flag get a value of 1 CLOSED This action is related to the Status_PitchAngleSelection quality flag. The definition of flag settings has changed and the final definition was included in the PEACE User Guide. PEA08-AI-5 to PEACE (due 31 Dec 2008): to provide the correct order of datasets for the inventory plots CLOSED Discussed at PM09 (implemented in recent days at CAA) PEA08-AI-6 to PEACE (due: 15 Jan 2009): to describe in the user guide the usage of quality information about how to filter the measurements and show an example what happens if you do not do this. OPEN The UG has been updated accordingly but further improvements are planned in a later release as more Status flags are implemented. PEA09-AI-8 to PEACE (due: 11 th Cross-Cal): to study the data gap on 17 March 2001, 03:40 – 04:00 UT (page 9 in Annex 1) CLOSED We checked delivered PEACE data and did not see any data gaps during this time interval. Status of Action Items

MSSL CC11-AI3 to PEACE: to consider making a poster presentation of their CAA datasets with focus on usability and quality of the datasets, at the 10 th anniversary of Cluster meeting, Corfu, Sept 27 – Oct CLOSED A poster was presented at the 10 th anniversary of Cluster meeting. CC11-AI9 to PEACE: to clarify when missing products for 2007 and 2008 can be provided (this appears to refer to MOMENTS). CLOSED MOMENTS for 2008 have been delivered. All data products affected by calibration updates will be re- delivered. Status of Action Items

MSSL 2009 CAA Peer Review Recommendations R1 to all teams: All data to end of 2009 to be ingested by May 2010 IN PROGRESS Currently the PEACE team is working on the delivering to the CAA key datasets. PEACE team is also updating calibrations in parallel. The rest of datasets will follow. R2 to all teams: Teams to provide all data with best available calibrations IN PROGRESS The PEACE team is taking this into account. R3 to all teams: Implement PR2009 recommendations to level feasible with existing resources. OPEN The PEACE team makes every effort to implement recommendations. R12 to all teams: Improve UG CLOSED We have issued an updated UG which aims to meet the requests where applicable to delivered datasets R13 to CAA/ALL: Users with specific interests may wish to access only a portion of the information available in user guides. The board recommends that both CAA and instrument teams consider developing user guides with a fast browsing capabilities. OPEN

MSSL 2009 CAA Peer Review Recommendations R14 to all teams: Continue Xcal and report in CR. OPEN The PEACE team carry on cross-cal activities with the WHISPER, WBD and EFW teams. R15 OR5-R15 to ALL: All key data production activities must be completed by summer All data from 2009 should be ingested by September IN PROGRESS We have produced key datasets (MOMENTS, PITCH_SPIN and 3DR) for In parallel we are working on extending calibrations up to end of 2009 – this work is hindered by the unavailability of 2009 WHISPER densities from cross-calibration studies. R23 to PEACE: PEACE team to complete production of all data sets through 2009 by September 2010, and finish calibration tasks and dataset production by Summer IN PROGRESS We have produced key datasets (MOMENTS, PITCH_SPIN and 3DR) for 2008 and part In parallel we are working on extending calibrations up to end of 2009 – this work is hindered by the unavailability of 2009 WHISPER densities from cross-calibration studies. R24 to PEACE: The PEACE pa distributions from spring 2001 suffer from reduced pa coverage due to a problem with on-board handling of FGM data. This problem and similar issues should be stated in the UG. OPEN

MSSL 2009 CAA Peer Review Recommendations R25 to PEACE: PEACE team to ensure that the best calibrations are applied to all data sets as soon as possible. IN PROGRESS We have produced alpha-factors from the end of 2004 up to end of 2008 based on comparison of PEACE-WHISPER densities. We are working to extend inter-anode calibrations up to end of 2009 using alpha-factors from the PEACE-WHISPER comparison studies. See earlier notes on calibration delivery status.

MSSL 2009 CAA Board Review Recommendations PR09-PEA01 to PEACE: Improve UG for general user. CLOSED UG update contains improved material PR09-PEA02 to PEACE: discuss performance highlights and limitations OPEN no new work done, though CR addresses this to some extent in my view PR09-PEA03 to PEACE: split UG into sections for normal and advanced users CLOSED Done in UG update PR09-PEA04 to PEACE: better explanation of Status Flags; QF discussion in normal users section CLOSED Done in UG update PR09-PEA05 to PEACE: show graphic examples of caveats OPEN Done some in UG update and 10 th Anniversary Cluster Meeting poster, could add more Status info PR09-PEA06 to PEACE: expand and move “recommendations section” in UG CLOSED Advised at PM09 that this is not needed

MSSL 2009 CAA Board Review Recommendations PR09-PEA07 to PEACE: discuss “background level”, use of FGM data for p.a.s CLOSED UG update contains improved material PR09-PEA08 to PEACE: discuss H/LEEA inter-cal in CR which is “omitted” CLOSED Actually it is in the CR already… PR09-PEA09 to PEACE: flag for partial moments, and discussion in UG OPEN Work in progress PR09-PEA10 to PEACE: history of e 0, discussion of its determination CLOSED Improved in UG update PR09-PEA11 to PEACE: don’t use SR2 for p.a. dataset coordinate system CLOSED Headers for PITCH* datasets recently redelivered with MFA as Coordinate System PR09-PEA12 to PEACE: be clear about whether directions quoted are in or out of detector CLOSED Updated in UG

MSSL 2009 CAA Board Review Recommendations PR09-ALL01 to ALL: UG to illustrate “data quality issues” OPEN Some work has been done; more is possible PR09-ALL02 to ALL: Provide caveats CLOSED CAVEATS files delivered. Status flag work is in progress. See UG Appendix D PR09-ALL03 to ALL: ICD update is required CLOSED PR09-ALL04 to ALL: assess usability of instrument data for spatial gradients work OPEN PR09-ALL05 to ALL: improve assessment of data quality; error bars etc OPEN No progress beyond work reported in CR PR09-ALL06 to ALL: mission long assessment of inter-calibration fidelity OPEN No progress beyond work reported in CR (will be part of validating next calibration release)

MSSL 2009 CAA Board Review Recommendations PR09-ALL08 to ALL: Restructure UG and ICD around normal and advanced user interface CLOSED PR09-ALL09 to ALL: CAA to provide ongoing Xcal plots; link to instrument CR OPEN Teams gave inputs in PM08 PR09-ALL10 to ALL: use CAA FGM for derived parameters or give caveats if not doing so CLOSED Discussed in UG PR09-ALL11 to ALL: digital version of cal results from CR to be archived in CAA CLOSED This happens as the data get archived… PR09-ALL12 to ALL: all docs referenced in UG to be at CAA OPEN PEACE UM not compliant PR09-ALL13 to ALL: UGs to contain tables of datasets in annex CLOSED Done in UG update

MSSL 2009 CAA Board Review Recommendations PR09-ALL14 to ALL: provide usability flags in the data; give clear indication of what quality is ok CLOSED Handled at top level by Status_Quality which is explained in UG and ICD SUMMARY Closed AIs at OR – 16 Closed AIs since OR – 6 OPEN or IN PROGRESS AIs – 21