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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
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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
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