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



Mullard Space Science Laboratory Space Plasma Physics Group




MSSL Space Plasma Physics Web Pages

MSSL Home Page


back to PEACE cal

By Sarah Szita

Last updated on 24/08/05  by Sarah Szita