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