12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAA

STAFF status report

N. Cornilleau-Wehrlin,P. Robert, V. Bouzid, and STAFF team

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAA

Content

• Management changes• Status of action items• STAFF - EFW issues : STAFF SA data quality

and waveform timing• Status of data set delivery• Data delivery plan• Remain to be done• Conclusion

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAA

Management changes

• Pi : Patrick Canu, starting 1st of December

• CAA engineer : Corinne Burlaud has left on October 1st; a new STAFF CAA engineer has to be hired; – probably not before January– In the mean time : the STAFF team, on the

best effort basis

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAStatus of action items

• R2a. STAFF– The board requests that the production of search coil

CWF and SA polarization and propagation data sets is undertaken as rapidly as possible to ensure delivery of all data by May 2010:

• CWF : delay due to CAA engineer departure• PPP : production has started

• CC8 – AI-45 STAFF– To carry out a cross-calibration study between STAFF-

SA and WBD as they appears to be not in good agreement with WBD above 700 Hz while WBD/Whisper shows moderately good agreement.

• Under the responsibility of O. Santolik, CoI of STAFF and WBD

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAStatus of action items ( continued)

• CC10 – AI-8 STAFF – To explain the processing

details of SA-WHI comparison, such as how power is integrated over the frequency channels and how timing is handled (linear interpolation); note that WHI signal is an average of several spectra:

• For each SA point, averaged over 20 s, WHI data are averaged over the same time interval, in the frequency range of SA (the 23% of the max frequency of one of the 27 frequencies of SA).

C1@ 2424 Hz C2@ 2424 Hz

C4@ 2424 HzC3@ 2424 Hz

Whisper

STAFF

SA

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAStatus of action items (11th cross-cal.)

• CC11 – AI-1 EFW/STAFF To indicate the datasets the intervals where TCOR is used to correct time. – Under the responsibility of DWP. A first version of the file has

been delivered to CAA

• CC11 – AI- 3 All teams : Poster at Corfu :– Done

• CC11 – AI-7 STAFF To present an example of data in the UG from the spacecraft with failed EFW probe where an asymmetric probe configuration is used and present an assessment of the data quality.– Data quality is understood; necessary informations will be

included in UG soon. The way to include it in the data is under study.

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAStatus of action items (OR 5 - STAFF)

• OR5-R26 Typing error in a header : corrected • OR5-R27 The board notes that the STAFF and EFW

waveforms are sampled at the same time, but that in many older files their time tags differ. The board requests the two teams to resolve this issue. The 2 teams work together (see hereafter).

• OR5-R28 The board requests that the STAFF team provides a more detailed description of the impact of EFW probe failure upon the quality of SA dataset. In progress (= CC11 – AI-7 ).

• OR5 - R29: The board recognize the progress the team has made in CWF datasets production and encourages the team to produce the file faster than proposed in their schedule (2001 in 2010 and the rest in 2011). Not possible due to departure of the CAA engineer.

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAStatus of action items (OR 5 -ALL)

• OR5 - R13 Users with specific interests may wish to access only a portion of the information available in user guides. The board recommends that both the CAA and instrument teams consider developing user guides with a fast browsing capability (links).– OPEN

• OR5-R14 ALL TEAMS Given the wealth of data sets available from each instrument, it can be difficult for new users to identify the data set(s) needed for their studies. The board recommends that each user guide include a short section pointing users to the appropriate data sets as a function of region of space and time. This information may take the form of flow charts or decision trees.– Doesn’t seem to be relevant to STAFF data

All UGs should include table of contents, as specified by the CAA– Will be done soon

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAStatus of action items (OR 5 -ALL)• OR5-R15 All teams should bear in their mind that the

CAA may be closed by November 2011 if the SPC does not extend the Cluster mission. Consequently all key data production activities must be completed by summer 2011 to allow time for data ingestion and possible problem shooting. The board has noticed inconsistencies between this requirement and some proposed delivery schedules, particularly in the case of teams that are already behind schedule. The board reminds instrument teams that all data from 2009 should be ingested by September 2010. – see actual delivery table

• OR5-R16 The board notes that the CAA lacks observations from the commissioning phase and recommends delivery of observations particularly from January 2001 (which have already been used for many publications) and December 2000 (when there are interesting interference campaigns).– Done for January 2001; more difficult for December 2000; for PPP

need of FGM 5VPS.

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAA

STAFF - EFW issues (1)

Recently, many exchanges between the 2 teams, including a teleconf some days ago

• 1 Use of STAFF SA electric components after EFW probe failure :– Saturation just after the failure. – Loss of sensitivity (46 m instead of 89 m) when one

probe in density mode (V=0)– A table giving the dates of failure and of stabilised

density mode configuration will be given soon to the users. Between the 2 dates, no guarantee of the quality; after, loss of sensitivity; an error bar will be given.

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAA

STAFF - EFW issues (2)

• 2 Timing of the wave form– Both instruments have the same filters and

synchronised digitalisation, same A/C converters

– Both apply TCOR (EFW after 2006)– Same timing, but– No transfer function applied by EFW, but a

constant group delay frequency independant; ~ OK up to ~ 6 Hz for 10 Hz filter and up to ~100 Hz for 180 Hz filters

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAA

10 Hz Filter Phase rotation for a constant filter group delay

Actual phase rotation

Applying a constant group delay becomes wrong in the higher frequency part of the band

Potential issue for e.g. Poynting vector calculations

Solution ?

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAStatus of data set delivery

Product Until now

SC DWF 2009 (SC 3: 2008) *

SC Complex Spectra 2009 (SC 3: 2008)*

SC Images 31/07/2010

SC CWF New ./.SA AGC/ PSD / SM 2009

SA Polarisation/

Propagation New 02/2001

Processed till end 2002

SA PSDNEG Caveat New

SA NOTSRP Caveat New2009

*TCOR availability

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAAData delivery planas of 26 October 2010

Year

Product2010 2011 2012 2013

SC DWF2009 SC3 * 2010 2011 2012SC Complex

spectra

SC Images End of 2010 2011 2012

SC CWF New 2001–2010 2011 2012

SA AGC/ PSD / SM/ and or BE products

2010 2011 2012

SA Polarisation/

Propagation New2001-2003 2004–2010 2011 2012

* Availability of TCOR

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAARemain to be done

• Optimize the CWF code• Update of calibration files• Validation of processed 2001-2002 PPP: some

differences between PPP results and PRASSADCO results at Meudon to be understood before routinelly processing and delivering PPP and the associated caveat UNDEFINED_MFA

• The best way to indicate to the user the validity of STAFF SA Electric field products

• Reprocess STAFF SA level 2 (renamed SM BE, PSD BE, AGC BE) to introduce new parameters (time resolution, STAFF status word)

• = close the open action items• Hire a new CAA engineer

To produce CWF

12th Cross-cal meetingToulouse 26-28 Oct. 2010

CAA

Conclusion

• Whereas a lot has been done (the “old” products delivered up to the end of 2009)

• A lot remains to be done