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The MSSL Space Plasma Physics Group pages have moved to

HTTP://WWW.UCL.AC.UK/MSSL/SPACE-PLASMA-PHYSICS.

Information about the PEACE instruments on the Cluster and Double Star Missions remains up-to-date on this site. Please update your links accordingly


 
 
 

Cluster PEACE Calibration

WHISPER density comparisons



[For more recent WHI calibration studies using more accurate data from the WHISPER team, please click here.]

Below is a list of orbits for which we have requested density data from WHISPER to help with our in-flight calibration.

This list was compiled with several criteria in mind:

Firstly, to cover all the PEACE calibration intervals: these include our own moment calibrations intervals and cross-calibrations with other instruments.
Times of both "good" and "bad" instrument gain have been chosen (we know when our MCPs were operating at optimum and less-than-ideal levels).

A good range of spatial environments has been selected.
Perigee passes - occasions where PEACE operates below L=6 in conjunction with WIDEBAND - are also included.
The list of must-haves was then filled out with some full orbits to give us fairly even mission coverage.
Orbit numbers marked with a * were not chosen by us, but the WHISPER team thought the data good so we are pleased to make a comparison.

Bold type shows the data has been kindly supplied by our WHISPER colleagues.

ORBIT

(Dates dd/mm/yy)

PEACE

REGIONS

 

TELEMETRY MODE

PEACE MCP Gain

EVENTS

PEACE DATA

WHISPER DATA

Listed C1,2,3,4 unless stated

EFW

Interpolated data

094

(02/02/01–04/02/01)

AZ-MS-SW-MS-AZ

NM

OK

 

53h

 

 

119

(02/04/01-05/04/01)

MS

MS

NM

NM

B

CAL

-

2001-04-02

 C1234 1905-2400

2001-04-03

 C1234 0000-0455

2001-04-04

 C1234 1245-2135

2001-04-02

 C4 1900-2400

2001-04-03

 C4 0000-0415

2001-04-04

 C4 1300-2145

 

142

(27/05/01-29/05/01)

AZ-MS

NM

B

CAL, MCP

F

2001-05-27

 C1 1050-2150

 C2 1050-2150

 C3 1130-2350

 C4 1050-2150

2001-05-28

 C1 0215-2350

 C2 0030-2350

 C3 0305-2350

 C4 0320-2350

2001-05-29

 C1 0340-1750

 C2 0200-1755

 C3 0010-1645

 C4 0015-1755

2001-05-27

 C1 1050-1130,1805-2150

 C2 1820-2200

 C3 1130-1330,1500-2400

 no C4

2001-05-28

 C1 0300-1930,2115-2400

 C2 0300-1930,2130-2400

 no C3

 C4 0215-2400

2001-05-29 

 C1 0000-1500

 C2 0000-1800

 no C3

 C4 0000-1500

167

(25/07/01-28/07/01)

AZ-PS-AZ

NM

G

 

F

2001-07-25

 C1 2200-2400

 C2 2200-2400

 C3 2200-2400

  no C4

2001-07-26

 C1 0000-0550

 C2 0000-0130

 C3 0000-0100

 no C4

 

175

(13/08/01-16/08/01)

AZ-PS-AZ

NM

G

 

F

 

 

189

(16/09/01-18/09/01)

AZ

PS

NM

3h BM for cal

G

 

CAL, MCP

4h

12h

 

 

191

(21/09/01-23/09/01)

AZ-PS-AZ

NM

G

 

F

2001-09-21

 C1 0150-2310

 C2 0145-2400

 C3 0300-2230

 C4 0150-2340

2001-09-22

 C1 0005-1135

 C2 0010-1200

 C3 0005-1150

 C4 0000-1045

2001-09-23

 C1 0505-0840

 C2 0500-0840

 C3 0500-0900

 C4 0500-0845

 

216

(19/11/01-21/11/01)

AZ-PS-MS-AZ

NM

G

 

F

2001-11-19

 C1 1330-1755

 no C2

 C3 1340-1735

 C4 1340-1420

2001-11-20

 C1 0310-0925

 C2 0310-0925

 C3 0315-0900

 C4 0310-1500

2001-11-21

 C1 1700-2230

 C2 1820-2230

 C3 0900-2205

 C4 0910-2230

 

234

(01/01/02-03/01/02)

AZ-MS-SW-MS-AZ

NM

OK

 

F

2002-01-01

 no C1

 2105-2400

 2210-2400

 2200-2400

2002-01-02

 1545-1810

 0000-0510,1700-2400

 0010-2400

 0000-2400

2002-01-03

 1400-1750

 0000-1825

 0000-1825

 0000-1830

2002-01-01 

 no C1

 2100-2400

 2200-2400

 2200-2400

2002-01-02

 no C1

 0000-0510,1700-2400

 0000-2100

 0000-1500,1750-2400

2002-01-03 

 no C1

 0000-1830

 0000-1830

 0000-1830

271

(30/03/02-01/04/02)

AZ-MS

SW

3h BM for cal

NM

B

3h PECAL

-

2002-03-30 

 C1234 0900-1810

 

 

 

2002-04-01 

 C1234 0035-0330

2002-03-30

 C1 0920-1815

 C2 0830-1815

 C3 0830-1815

 C4 0830-1815

2002-04-01

 C1 0050-0335

 C2 0050-0335

 C3 0050-0325

 C4 0050-0330

 

272

(01/04/02-04/04/02)

AZ-MS

SW

MP

3h BM for cal

NM

NM

B

3h PWCAL

-

-

2002-04-01 

 C1234 1855-2400

 

 

 

2002-04-02    

 C1234 0000-0640,1900-2105

 

 

 

2002-04-03 

 C1234 1610-2115

 

 

 

2002-04-01

 C1 1900-2355

 C2 1900-2350

 C3 1900-2400

 C4 1900-2355

2002-04-02

 C1 0000-0640,1915-2105

 C2 0000-0640,1915-2105

 C3 0000-0640,1915-2105

 C4 0000-0640,1915-2105

2002-04-03

 C1 1600-2025

 C2 1600-2030

 C3 1600-2020

 C4 1600-2020

 

283

(27/04/02-30/04/02)

MS-SW

MS

AZ

3h BM

NM

NM

LEEAs G,

HEEAs adjusted within orbit

CAL

-

-

2002-04-28

 C1234 0530-1020

 

 

 

2002-04-29

 C1234 1745-2210

 

 

 

2002-04-30

 C1234 0410-0510

2002-04-28

 C1 0300-1020

 C2 0300-1020

 C3 0300-1020

 C4 0300-1020

2002-04-29

 C1 1800-2210

 C2 1800-2210

 C3 1800-2140

 C4 1800-2140

Good time res.

 

288

(09/05/02-12/05/02)

AZ-MS

MS

1.5h BM for cal

NM

G except

C234H

CAL

-

2002-05-09 

 C1234 1920-2400

2002-05-10

 C1234 0000-0850

 

 

 

2002-05-11

 C1234 1440-1900

 

 

 

2002-05-10

 C1 0400-0855

 C2 0400-0855

 no C3

 C4 0400-0855

2002-05-11 

 C1 1500-1840

 C2 1500-1840

 C3 1500-1840

 C4 1500-1840

Good time res.

 

305

(19/06/02-21/06/02)

AZ

MS-PS-AZ

NM

3h BM for cal

G

-

CAL

2002-06-19  0515-0835

2002-06-20  0325-2400

 

 

 

2002-06-21  0000-1135

 

2002-06-20  0500-2400

                 0500-2400

                 0500-2400

                 0500-2400

2002-06-21  0000-0240

                 0000-0240

                 0000-0240

                 0025-0245

Good time res.

 

329*

(15/08/02-17/08/02)

AZ-PS-AZ

NM

 

 

F

C1 only

2002-08-17 1600-1900

 

347*

(27/09/02-29/09/02)

 

NM

 

 

F

2002-09-29 0000-0600

                 0000-0600

                 no C3

                 0000-0500

 

348

(29/09/02-01/10/02)

AZ-PS-AZ

3h BM in PS

G

MCP

F

2002-09-30 1950-2350

                 1950-2350

                 1950-2350

                 1950-2350

 

354

(13/10/02-16/10/02)

AZ-PS-AZ

4.5h BM in PS

G

 

F

 

 

387

(31/12/02-02/01/03)

AZ

MS_SW_MS

AZ

3h BM on MP

NM

NM

G except C3L

MCP

-

-

2002-12-31  0830-2020

                  0830-2020

                  0830-1720

                  0830-2020

2003-01-01  0635-2355

 

 

 

2003-01-02  1125-1615

2002-12-311800-2400

                 1930-2400

                 1930-2400

                 1930-2400

2003-01-01  0000-2400

                 0000-2400

                 0000-2400

                 0000-2400

2003-01-02  0000-1000

                 0000-1050

                 0000-0715

                 0000-1050

Good time res.

 

410

(24/02/03-26/02/03)

AZ-MS-SW-MS-AZ

4h BM on MP

G except C3L

 

F

2003-02-24 1000-2400

                 1005-2400

                 1035-2400

 1150-1830, 2155-2400

2003-02-25  0000-2400

                 0000-2400

                 0000-2400

                 0000-2400

2003-02-26  0000-0345

                 0000-0345

                 0000-0505

                 0000-0340

Good time res.

 

434

(22/04/03-24/04/03)

AZ-MS-SW-MS-AZ

4h BM in AZ

C1, C2L G

 

F

2003-04-22

 C1 1200-2400

 C2 1200-2400

 C3 1200-2400

 C4 1200-2400

2003-04-23

 C1 0000-2400

 C2 0000-2400

 C3 0000-2400

 C4 0000-1302

2003-04-24

 C1 0000-0335

 C2 0000-0335

 C3 0000-0520

 no C4

Good time res.

 

472

(21/07/03-24/07/03)

AZ-PS-AZ

NM

 

PE

F

 

 

473

(24/07/03-26/07/03)

AZ-PS-AZ

3h BM on neutral sheet

 

PE

F

 

 

490

(02/09/03-04/09/03)

AZ-PS-AZ

3h BM on PS (incl ECL)

 

ECL

F

 

 

521

(15/11/03-17/11/03)

AZ-PS-MS-AZ

BM for o/b auroral zone

G

MCP, PE

F

 

 

540

(30/12/03-01/01/04)

AZ-MS-SW-MS-AZ

3h BM at MP

G

PE 

F

 

 

558

(11/02/04-13/02/04)

AZ-MS-SW-MS-AZ

4.5h BM at MP

G except

C3L C4H

PE

F

2004-02-11

 C1 1200-2400

 C2 1200-2400

 C3 1200-2400

 C4 1200-2400

2004-02-11

 C1 0000-2400

 C2 0000-2400

 C3 0000-2400

 C4 0000-2400

2004-02-11

 C1 0000-0445

 C2 0000-0720

 C3 0000-0355

 C4 0000-0720

Good time res.

 

587

(20/04/04-22/04/04)

AZ-MS

SW

AZ

NM

1.5h BM for cal

NM

 

PE

CAL

-

8h

1.5h

8.5h

more on sc1

 

 


 Key for abbreviations:

Regions:

These are the regions observed by PEACE during the orbit:
    AZ = cusp or auroral zone
    PS = plasmasheet
    MS = magnetosheath   

    MP=magnetopause
    SW = solar wind

Dashes (e.g. AZ-MS-AZ) link regions within a single interval of data, separate lines show separate data acquisition intervals.
Mode:

This will give you a clue as to what data products to expect (more 3D data in BM):

   NM=normal mode

   BM=burst mode

PEACE MCP Gain:

   G = "good" gain (>=1e6 electrons)
    B = "bad" gain (<1e6 electrons)
    OK = around 1e6 electrons

    N.B. Gain curves vary for each sensor – this column gives an overview – check the curves!

Events:

    PE = perigee ops
   
CAL = includes cal interval (PWCAL = PEACE-WHISPER cross-cal, PECAL = PEACE-EDI cross-cal )

    MCP = includes mcp test

    ECL = eclipse
Amount of PEACE data:

    One time interval is given where it is the same for all four satellites.
    F = full orbit of data



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back to PEACE cal

By Sarah Szita

Last updated on 24/08/05  by Sarah Szita
 
 

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