RBSP Mission Overview

RBSPICE Data Products and Tools
RBSPICE Team
Pontus C. Brandt, Don Mitchell, Jerry W. Manweiler, Micah Johnson
RBSP Data Workshop 15 May 2012
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RBSPICE Data Products - Summary
Data Product Title
Level
Contents
Daily
Volume
L0
Raw de-commutated
telemetry received at
RBSPICE-SOC
~414 MB Binary
L1
Raw telemetry
Count Rates
L2
Calibrated
Intensity
L3
Pitch Angle
and Moments
L4
Phase Space
Density
Latency
Frequenc
y
Public
Release
Status
No
Done
from
Receipt (T0)
daily
ISTP Compliant CDF
& ASCII (CSV)
T0­ + < 14
days
daily
ISTP Compliant CDF
& ASCII (CSV)
T0­ + < 1
month
daily
Yes
Almost
done
~1500
MB
ISTP Compliant CDF
& ASCII (CSV)
T0­ + < 3
months*
daily
Yes
In
progress
~30 MB
ISTP Compliant CDF
& ASCII (CSV)
T0 + < 1 year
Selected
events
Yes
In
progress
Sorted, time-tagged,
~750 MB
instrument separated
cts/sec
Calibrated and
~1200
corrected physical units MB
Pitch angle
distributions, plasma
moments
PSD units, adiabatic
invariants, magnetic
coordinates
Format
RBSP Data Workshop 15 May 2012
MSIM3
Yes
Done
MSIM3
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RBSPICE data products and tools

Website: rsbpice.ftecs.com



Static summary plots [Pontus]



Pre-made, 24h and orbit-by-orbit options
Interactive summary plots [Micah]
MIDL (mission independent data
layer) [Don]





Instrument/science info for outreach and
education
Tools and data links as follows
detailed GUI-oriented analysis
Will include all RBSP data.
Error bars are included in L2 RBSPICE
data
Please let us know when you can provide
your highest level data products.
TDAS


Detailed command-line oriented analysis
RBSPICE team will provide Level-2 and
higher CDF data and routines for reading
data and compute derived products. As a
back-up UCLA can help.
RBSPICE data products and tools

Website: rsbpice.ftecs.com



Static summary plots



Pre-made, 24h and orbit-by-orbit options
Interactive summary plots
MIDL (mission independent data
layer)





Instrument/science info for outreach and
education
Tools and data links as follows
detailed GUI-oriented analysis
Will include all RBSP data.
Error bars are included in L2 RBSPICE
data
We want YOUR highest level (L2-L4)!
TDAS


Detailed command-line oriented analysis
RBSPICE team shall provide Level-3
CDF data (L3 has pitch angles) and
routines for reading data and compute
derived products. As a back-up UCLA
can help.
Scenarios
Summar MIDL
y
TDA
S
Team
X
X
X
Outside
X
X
X
Survey
X
Targeted
access
X
X
Large volume
Working
on it…
X
Space
Weather
Events
(project)
SOC (Jerry) can provide
processed data in <60
min after beacon-data.
RBSPICE 1-S/C Summary Plot
X-axis: 00:00-24:00 UTC or orbit-by-orbit, S/C position R, MLAT, MLT
Instrument parameters to display: none. RBSPICE operates in one mode.
Inset of trajectory plot of S/C A and B in SM-equatorial plane
Product
Unit
# plots
Motivation
Energy-time spectrogram of H+,
He+, O+
Differential intensity
(cm2 sr s keV)-1
3
Best plot type for surveys of
injections, dispersions, etc.
Electron energy-time
spectrogram
Differential intensity
(cm2 sr s keV)-1
1
Background monitor
Pitch-angle-time spectrogram of
protons at 100 keV
Differential intensity
(cm2 sr s keV)-1
1
Representative of ring
current pressure and EMIC
wave resonance energy
Pitch-angle-time spectrogram of
protons at 30 keV
Differential intensity
(cm2 sr s keV)-1
1
To assess energy
dependence of above
Line plot of parallel, perpendicular nPa
and total pressure
1
To assess impact on B-field
Line plot of B-field components
Br, Btheta, Bphi and Btot
1
Assess field structure,
currents, dipolarization fronts
nT
RBSP Data Workshop 15 May 2012
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RBSPICE 2-S/C Summary Plot
X-axis: 00:00-24:00 UTC or orbit-by-orbit, S/C position R, MLAT, MLT
Instrument parameters to display: none. RBSPICE operates in one mode.
Inset of trajectory plot of S/C A and B in SM-equatorial plane
May divide in to two different plot pages (TBD)
Product
Unit
#
plots
Motivation
Energy-time spectrogram of H+, He+, O+.
A and B stacked.
(cm2 sr s keV)-1
6
Best plot type for surveys of
injections, dispersions, etc.
Electron energy-time spectrogram. A and
B stacked.
(cm2 sr s keV)-
2
Background monitor
2
Representative of ring
current pressure and EMIC
wave resonance energy
Pitch-angle-time spectrogram of protons
at 100 keV. A and B stacked.
1
(cm2 sr s keV)1
Pitch-angle-time spectrogram of protons
at 30 keV. A and B stacked.
(cm2 sr s keV)-1
2
To assess energy
dependence of above
Line plot of parallel, perpendicular and
total pressure. A and B stacked or
combined.
nPa
≥2
To assess impact on B-field
Line plot of B-field components Br,
nT
≥2
Btheta, Bphi and Btot. A and B stacked
RBSP Data Workshop 15 May 2012
or combined.
Assess field structure,
currents,
dipolarization fronts
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Interactive Summary Plots
Micah to demonstrate
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MIDL Product Example
Detailed GUI-oriented tool
Cassini, New Horizons,
Messenger, Juno, RBSP
Combines multiple data sets
Geomagnetic indices, solar wind
data
Platform independent (Java)
Teams: when can you provide
your highest level data sets?
RBSPICE team will create plot
types as appropriate and as
suggested
Other plot types developed as
needed
send ideas to Jon Vandegriff and
Larry Brown
MIDL combines multiple data sets for doing
customized science analysis, export data and
figs in several formats.
MIDL
Don to demonstrate
9
Extra Slides not presented
RBSP Data Workshop 15 May 2012
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RBSPICE Baseline Science Operations
RBSPICE Team
Pontus C. Brandt, Don Mitchell, Jerry W. Manweiler
RBSP Data Workshop 15 May 2012
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Instrument Operations
RBSPICE Observations
Only one primary mode of operation
This mode produces the full complement of normal telemetry products continuously
This mode covers the entire RBSP orbit
No special operations during inner belt passage
Burst Mode –RBSPICE does not have a burst mode. We could increase our time
resolution by about a factor of 2 for brief intervals, should it become clear that it
would be advantageous. At present, we are not convinced we’d have the
counting statistics to justify that, and we do not have the telemetry allocation to
allow it routinely.
Instrument Configuration
Controlled by ground command
Queued on-board commands according to planned campaigns
Parameters are changed infrequently, and typically only to optimize or
correct instrument configuration.
Instrument software loads are generated as needed but expected on an
infrequent basis
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Detailed Data Flow Description
General processing thru the “pipeline” for RBSPICE data:
1) Daily queries to MOC/EMFISIS for new or modified data products
2) Characterization of downloaded data products thru download process
3) Production of Level 1 thru Level 3 data products with option for Level
4 data products (scientifically identified criteria to be determined by
RBSPICE science team, RBSP SWG or other instrument teams, or
RBSP project scientists)
4) Publication of all data thru standard HTTP/FTP/SOAP protocols as
ISTP compliant CDF, ASCII (CSV) flat files, XML packaged and SPASE
XML described data fragments.
RBSP Data Workshop 15 May 2012
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RBSPICE : Key Instrument
Measurements/Performance
Parameter
Flight Configuration
Capability
Comment/Heritage
Electron Energies
25 - 1000 keV
25 - 1000 keV
Electron capability from JEDI,
helps with calibration as well
Ion Energies
H: 20 - 1000 keV
He: 30* - 1000 keV
O: 50 - 1000 keV
H: 10 - 10000 keV
He: 25* -10000 keV
O: 50 - 10000 keV
* Lower bound energy at which He
ions are counted. He is identified
only above 70keV
Energy Resolution
H: 20% for required
energy range
He, O: 40%
H: 20% for required energy range.
All species: 40% above and below
required energy range
20% resolution met directly for
protons over most energies, and
by deconvolution 30 to 70 keV
Time sampling
1 sec (1/12 spin)
0.33 sec (1/36 spin)
Limited by data volume allocation
Angle resolution
15 ° x 30 °
15 ° x 12 °
Limited by data volume allocation
Pitch Angle (PA) Coverage
0°-90° or 90°-180°
0°-90° or 90°-180°
148° FOV swept through spin
Time for Full PA
1 spin
1 spin
Subset of products for LBR
Ion Composition
H above 20 keV
He above 70 keV
O above 50 keV
H above 10 keV
He above 60 keV
O above 50 keV
He composition above 60-70 keV
Electron Sensitivity:
I=Intensity (1/cm2.sr)
No Requirement
Sensor-G:0.005-0.00025 (cm2.sr)
Pixel-G: 0.0009-0.00004 (cm2.sr)
Up to 6E5 1/s counting
I=Intensity (1/cm2.sr)
G=geom. factor x eff. (cm2.sr)
Variable G; 6 pixels/sensor
Ion Sensitivity
I = 1E4-1E8/cm2.s.sr
Sensor-G:0.01-0.0005 (cm2.s.sr)
Pixel-G: 0.0009-0.00004 (cm2.s.sr)
Up to 3.5E5 1/s counting (TOF)
Variable Geometric Factor (*20)
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Telemetry, and how it relates to resolution
(time, angle, energy)
To achieve 10° angular binning, RBSPICE would require significantly greater data volume.
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L2 delivery time
ECT
~ weeks
EMFISIS
2 weeks
EFW
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Summary Plots
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Interactive Plots
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Space Weather Support
RBSPICE will broadcast data in real-time as part of the RBSP mission
support of space weather modeling, forecast and prediction efforts
Particle Count Rates
Proton energy
*(all ions at 1
and 10 MeV)
# particle
species
(Protons)
per # spins
#polar (spin
plane)
angles
#az
angles
#values
/ spin
#bits/
value
Data Product
Report Rate
(bps):
50 keV
1
1
1
12
12
10
30
100 keV
1
1
1
12
12
10
30
150 keV
1
1
1
12
12
10
30
300 keV
1
1
1
12
12
10
30
1 MeV*
1
10
1
4
0.4
10
.33
10 MeV*
1
10
1
4
0.4
10
.33
Notes:
#polar corresponds to “look direction”, #az corresponds to “spin sector”. Data will be log compressed.
All values reported once per (~12 second) spin, except 1 & 10 MeV ions (2 minute resolution)
Total bit rate: 120.67 bps.
RBSP Data Workshop 15 May 2012
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RBSPICE mounting
To Sun
160.0º
16.9º
The RBSPICE sensor mounted at a
16.9° angle, such that its 160°
FOV covers from beyond the
anti-sunward spin axis to 16.9°
off the sunward pointing spin
axis. The sun moves back and
forth, at times as much as 27°
off the spin axis, so the
RBSPICE FOV is blocked for an
additional 12°. The (electron)
detector behind this look
direction becomes the
“Witness” detector.
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Log TOF (ns)
Selected Data Products (examples from
New Horizons PEPSSI at Jupiter)
S
100
O
He
10
H
1000
100
Log Energy (keV)
H
O+S
Electrons
46
60
DOY (2007)
76
Energetic Particle Detector
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