15th caa cross calibration workshop 17 19 april 2012 university college of london
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15th CAA Cross-Calibration Workshop /17-19 April 2012 University College of London. STAFF Report. 1. Status of data delivery:. a. STAFF-SA. 1. Status of data delivery:. a. STAFF-SA. 1. Status of data delivery:. b. STAFF-SC: NBR and HBR mode. 2. Delivery plan:. 3. Status of data pipeline:.

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15th CAA Cross-Calibration Workshop /17-19 April 2012 University College of London

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15th caa cross calibration workshop 17 19 april 2012 university college of london

15th CAA Cross-Calibration Workshop /17-19 April 2012UniversityCollege of London

STAFF Report


1 status of data delivery

1. Status of data delivery:

a. STAFF-SA

15th Cross-Calibration Workshop / 17-19 April 2012


1 status of data delivery1

1. Status of data delivery:

a. STAFF-SA

15th Cross-Calibration Workshop / 17-19 April 2012


1 status of data delivery2

1. Status of data delivery:

b. STAFF-SC: NBR and HBR mode

15th Cross-Calibration Workshop / 17-19 April 2012


2 delivery plan

2. Delivery plan:

15th Cross-Calibration Workshop / 17-19 April 2012


3 status of data pipeline

3. Status of data pipeline:

  • SA:

    • Data pipelines are operational.

  • SC:

    • DWF pipeline was rebuild in order to add new elements needed by CWF data.

    • CS pipeline need to be updated according to the new calibration table.

      → All these data will be reproduced and delivered to CAA for the complete mission period.

    • CWF pipeline is close to be completed. It is ready for ISR2 but it needs a patch to produce in the same time data in ISR2 and GSE. This pipeline was delayed due to the comparison between FGM and STAFF, in order to validate the new calibration process.

15th Cross-Calibration Workshop / 17-19 April 2012


15th caa cross calibration workshop 17 19 april 2012 university college of london

VTL2.rff

CWF.cef

Validation tool

SpectroCWF.ps

(XYZ)

=~76h30

Validation tool

~2 min for NBR

~3 min for HBR

~15 h for NBR

~60 h for HBR

~2 min for NBR

~3 min for HBR

=~1h30

WFL1.rff

VTL1.rff

~30 min for NBR

~50 min for HBR

~20 min for NBR

~50 min for HBR

CSL2.rff

=~2h45

CS.cef

DWF.cef

Time given for one month for 4 satellites with one CPU.

~2 min for NBR

~3 min for HBR

15th Cross-Calibration Workshop / 17-19 April 2012


15th caa cross calibration workshop 17 19 april 2012 university college of london

4. STAFF-FGM Cross-Calibration:

a. The old calibration

• Fit of Bx and By components in spinning system by a sine signal at spin frequency give estimate of Bperp files and phase angle f

• Amplitude assumed to be constant during the window sampling

20 sec

• BDC sample rate must be > 1 spin period

b. The new calibration

• Slidingwindows, givingcontinuousestimate of BDC and Bwaves

• Final CWF are the sum of BDC and Bwaves

• Initial sample rate preserved

40 sec

15th Cross-Calibration Workshop / 17-19 April 2012


15th caa cross calibration workshop 17 19 april 2012 university college of london

4. STAFF-FGM Cross-Calibration:

b. The new calibration

Problem with the original ground calibration of the instruments, due to non circular Helmoltz coils (time degradation).

→ New measurements done in Chambon-la-forêt by the technical team with new Helmoltz coils lead to new calibration tables and new transfer functions.

15th Cross-Calibration Workshop / 17-19 April 2012


4 staff fgm cross calibration

4. STAFF-FGM Cross-Calibration:

b. One event comparison

SR2

FGM: PPD 4s / STAFF Despin Software 20s

<∆B⊥/B⊥> ± σB⊥/B⊥

= 21.65%±1.66%

15th Cross-Calibration Workshop / 17-19 April 2012


4 staff fgm cross calibration1

4. STAFF-FGM Cross-Calibration:

b. One event comparison

SR2

SR2

FGM: PPD 4s / STAFF: Despin Software 20s

<∆B⊥/B⊥> ± σB⊥/B⊥

= 21.65%±1.66%

FGM: CAA FULL / STAFF: Cont. cal. method

<∆B⊥/B⊥>±σB⊥/B⊥

= 0.77%±0.84%

15th Cross-Calibration Workshop / 17-19 April 2012


4 staff fgm cross calibration2

4. STAFF-FGM Cross-Calibration:

b. One event comparison

SR2

SR2

FGM: PPD 4s / STAFF: Despin Software 20s

<∆B⊥/B⊥> ± σB⊥/B⊥

= 21.65%±1.66%

FGM: CAA FULL / STAFF: Cont. Cal. method

<∆B⊥/B⊥>±σB⊥/B⊥

= 0.77%±0.84%

15th Cross-Calibration Workshop / 17-19 April 2012


4 staff fgm cross calibration3

4. STAFF-FGM Cross-Calibration:

b. One event comparison

SR2

  • Continuous calibration workswelleven on short time scale.

  • ∆B⊥/B⊥ < 1%

  • ∆j ≃3° → understudy.

15th Cross-Calibration Workshop / 17-19 April 2012


4 staff fgm cross calibration4

4. STAFF-FGM Cross-Calibration:

b. One event comparison

SR2

Spin residue

It could be removed in next update but it is still under discussion.

15th Cross-Calibration Workshop / 17-19 April 2012


4 staff fgm cross calibration5

4. STAFF-FGM Cross-Calibration:

b. Statistical comparison

15th Cross-Calibration Workshop / 17-19 April 2012


4 staff fgm cross calibration6

4. STAFF-FGM Cross-Calibration:

b. Statistical comparison

15th Cross-Calibration Workshop / 17-19 April 2012


5 conclusion

5.Conclusion

  • Data delivery:

    • SA OK.

    • SC a little late, due to the new calibration method.

  • Cross calibration SC / FGM

    • Very good new results due to

      • New calibration tables

      • New calibration method.

        S/C # 2, 3 and 4 : 10% → 1%

        S/C # 1 : 20% → 1%

    • Still pending:

      • spin residue at 2 fs.

      • ∆φ≃ 3° to be confirmed.

15th Cross-Calibration Workshop / 17-19 April 2012


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