FAST Time of Flight Energy Angle Mass Spectrograph (TEAMS) Energy-Pitch Angle Distributions, Level 2 (L2), 5 s Data

2020-05-20 15:38:11Z

Fast Auroral SnapshoT Explorer, FAST, Time-of-flight Energy Angle Mass Spectrograph, TEAMS, Level 2 Energy-Pitch Angle Distributions TEAMS instrument is a high sensitivity mass resolving spectrometer with an instantaneous 360° field of view. It is designed to measure the full three-dimensional distribution function of ions. TEAMS selects the incoming ions according to energy per charge in the range from 1.2 eV/q to 12 keV/q by electrostatic deflection in a toroidal section analyzer with subsequent acceleration up to 25 keV/q and time-of-flight, TOF, analysis. For each individual ion the instruments measures the energy per charge (electrostatic analyzer), the mass per charge (TOF analyzer), the incidence azimuthal angle (given by spacecraft spin at 5.6° or 11.2° resolution), and the incidence polar angle (given by the 22.5° sectoring in the TOF unit). Depending on the measurement mode the full energy sweep is performed 32 or 64 times per spin period thus providing a 2-D cut through the distribution function in polar angle every 78 ms or 156 ms. One complete 3-D ion distribution function is obtained in half a 5 s spin period. The instrument axis of symmetry is perpendicular to the spacecraft spin axis and the spacecraft surface. TEAMS operates in a number of different data acquisition modes. The Survey Distribution mode samples H°, O°, He°, and He°² with high angular (64 bin) and energy (48 bin) resolution. Time resolution can be as low as 80 ms (slow survey) and as high as 10 ms (fast survey). The High Mass Distribution mode uses a high mass (64 bin) resolution to identify minor species with lower resolution angular and energy resolution with 16 bins for each. The High Mass Distribution mode time resolution varies from 80 ms (slow) to 20 ms (fast). Burst mode provides data for the four major ion species with the highest time resolution (0.08 ms) with 16 angle bin and 48 energy bin resolution. Additional measurement modes are geared towards the Pole Channels, Monitor Rates, and pulse height analysis, PHA, events.

Please acknowledge the Principal Investigator L.M. Kistler for use of the Data

	Role	Person	StartDate	StopDate	Note
1.	PrincipalInvestigator	spase://SMWG/Person/Lynn.M.Kistler
2.	MetadataContact	spase://SMWG/Person/Robert.M.Candey
3.	MetadataContact	spase://SMWG/Person/James.M.Weygand

spase://VSPO/NumericalData/FAST/TEAMS/Level2/EnergyPitchAngleDistributions/PT5S

spase://SMWG/Repository/NASA/GSFC/SPDF

Online

Open

CDF

None

Please acknowledge the Principal Investigator L.M. Kistler. Please acknowledge the Data Providers and CDAWeb when using these Data.

spase://SMWG/Repository/NASA/GSFC/SPDF

Online

Open

Binary

Please acknowledge the Principal Investigator L.M. Kistler. Please acknowledge the Data Providers and CDAWeb when using these Data.

PT5S

Epoch Time, TT2000

Epoch

Epoch Time Tags in Terrestrial Time 2000, TT2000

This Parameter exhibits an increasing Monotonic Progression

PT5.1S

PT20.4S

ns

1.0e-9>s

1990-01-01T00:00:00.000000000

2029-12-31T23:59:59.999999999

9999-12-31T23:59:59.999999999

Epoch Time, TT2000, Helium

Epoch_Helium

Epoch Time Tags in Terrestrial Time 2000, TT2000, Helium

This Parameter exhibits an increasing Monotonic Progression

PT5.1S

PT20.4S

ns

1.0e-9>s

1990-01-01T00:00:00.000000000

2029-12-31T23:59:59.999999999

9999-12-31T23:59:59.999999999

Delta Time

delta_time

Sample width: end time - start time

PT5.1S

PT20.4S

1

60

-1.0000e+31

Helium Delta Time

delta_time_helium

Sample width: end time - start time

PT5.1S

PT20.4S

1

60

-1.0000e+31

Proton, Energy-Pitch Angle Distribution

Time series defined by using: EPOCH

proton_distribution

Proton, H⁺, Energy-Pitch Angle Distribution. * Column 1 Labels from ENERGY: [ 11200.0, 9560.00, 8060.00, 6610.00, 5540.00, 4780.00, 4040.00, 3300.00, 2760.00, 2390.00, 2020.00, 1660.00, 1380.00, 1200.00, 1010.00, 826.000, 691.000, 598.000, 504.000, 413.000, 346.000, 298.000, 252.000, 206.000, 173.000, 150.000, 126.000, 103.000, 86.4000, 74.7000, 63.0000, 51.6000, 43.2000, 37.3000, 31.5000, 25.9000, 21.6000, 18.6000, 15.8000, 12.9000, 10.8000, 9.35000, 7.87000, 6.31000, 4.74000, 3.28000, 1.97000, 1.15000]. * Column 2 Labels from PITCH_ANGLE: [ 11.2500, 33.7500, 56.2500, 78.7500, 101.200, 123.800, 146.200, 168.800, 191.200, 213.800, 236.200, 258.800, 281.200, 303.800, 326.200, 348.800].

Survey Resolution H+, flux

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

-1.0e+31

Singly-charged Oxygen, Energy-Pitch Angle Distribution

Time series defined by using: EPOCH

oxygen_distribution

Singly-charged Oxygen, O⁺, Energy-Pitch Angle Distribution. * Column 1 Labels from ENERGY: [ 11200.0, 9560.00, 8060.00, 6610.00, 5540.00, 4780.00, 4040.00, 3300.00, 2760.00, 2390.00, 2020.00, 1660.00, 1380.00, 1200.00, 1010.00, 826.000, 691.000, 598.000, 504.000, 413.000, 346.000, 298.000, 252.000, 206.000, 173.000, 150.000, 126.000, 103.000, 86.4000, 74.7000, 63.0000, 51.6000, 43.2000, 37.3000, 31.5000, 25.9000, 21.6000, 18.6000, 15.8000, 12.9000, 10.8000, 9.35000, 7.87000, 6.31000, 4.74000, 3.28000, 1.97000, 1.15000]. * Column 2 Labels from PITCH_ANGLE: [ 11.2500, 33.7500, 56.2500, 78.7500, 101.200, 123.800, 146.200, 168.800, 191.200, 213.800, 236.200, 258.800, 281.200, 303.800, 326.200, 348.800].

Survey Resolution O+, flux

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

-1.0e+31

Singly-charged Helium, Energy-Pitch Angle Distribution

Time series defined by using: EPOCH_HELIUM

helium_distribution

Singly-charged Helium, He⁺, Energy-Pitch Angle Distribution. * Column 1 Labels from ENERGY: [ 11200.0, 9560.00, 8060.00, 6610.00, 5540.00, 4780.00, 4040.00, 3300.00, 2760.00, 2390.00, 2020.00, 1660.00, 1380.00, 1200.00, 1010.00, 826.000, 691.000, 598.000, 504.000, 413.000, 346.000, 298.000, 252.000, 206.000, 173.000, 150.000, 126.000, 103.000, 86.4000, 74.7000, 63.0000, 51.6000, 43.2000, 37.3000, 31.5000, 25.9000, 21.6000, 18.6000, 15.8000, 12.9000, 10.8000, 9.35000, 7.87000, 6.31000, 4.74000, 3.28000, 1.97000, 1.15000]. * Column 2 Labels from PITCH_ANGLE: [ 11.2500, 33.7500, 56.2500, 78.7500, 101.200, 123.800, 146.200, 168.800, 191.200, 213.800, 236.200, 258.800, 281.200, 303.800, 326.200, 348.800].

Survey Resolution He+, flux

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

-1.0e+31

Proton, Spin averaged fluxes

Time series defined by using: EPOCH

proton_omni_flux

Proton, H⁺, Spin averaged fluxes

Survey Resolution H+, flux

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

0.0

1.0e+10

-1.0e+31

Singly-charged Oxygen, Spin averaged fluxes

Time series defined by using: EPOCH

oxygen_omni_flux

Singly-charged Oxygen, O⁺, Spin averaged fluxes

Survey Resolution O+, flux

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

0.0

1.0e+10

-1.0e+31

Singly-charged Helium, Spin averaged fluxes

Time series defined by using: EPOCH_HELIUM

helium_omni_flux

Singly-charged Helium, He⁺, Spin averaged fluxes

Survey Resolution He+, flux

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

0.0

1.0e+10

-1.0e+31

Data Quality Flag, Proton

Time series defined by using: EPOCH

proton_flag

Survey Resolution Proton, H⁺, Data Quality Flag, non-zero values indicate that incomplete data was used

0 is good, non-zero values indicate that incomplete data was used

PT5.1S

PT20.4S

0

15

255

Data Quality Flag, Oxygen

Time series defined by using: EPOCH

oxygen_flag

Survey Resolution singly-charged Oxygen Flag, O⁺, Data Quality Flag, non-zero values indicate that incomplete data was used

0 is good, non-zero values indicate that incomplete data was used

PT5.1S

PT20.4S

0

15

255

Data Quality Flag, Helium

Time series defined by using: EPOCH_HELIUM

helium_flag

Survey Resolution singly-charged Helium Flag, He⁺, Data Quality Flag, non-zero values indicate that incomplete data was used

0 is good, non-zero values indicate that incomplete data was used

PT5.1S

PT20.4S

0

15

255

Bin Energy Values

Energy

Bin centered Energy Value Array

PT5.1S

PT20.4S

eV

1.602176565e-19>J

0.0

12000.0

-1.0e+31

Bin Pitch Angles

pitch_angle

Bin centered Pitch Angle Value Array

PT5.1S

PT20.4S

°

0.0174532925>rad

0.0

360.0

-1.0e+31

Loss Cone Angle

loss_cone_angle

Loss Cone Angle. Calculated from dipole magnetic field.

PT5.1S

PT20.4S

°

0.0174532925>rad

0.0

360.0

-1.0e+31

Magnetic Field Vector

B_vec

B vector in TEAMS coordinate system with H+ time bins. In the TEAMS coordinate system Z is along the spin axis, the spin plane of the spacecraft is the X-Y plane, and X is the location of TEAMS FOV at the time of the spin pulse. The Y axis completes the righthand coordinate system. The despun spacecraft coordinate system aligned with the TEAMS instrument.

PT5.1S

PT20.4S

nT

-180

65600

-1.0e+31

Proton Error

proton_error

Poisson Error in H+ energy-pitch angle distribution.

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

0.0

1.0e+10

-1.0e+31

Oxygen Error

oxygen_error

Poisson Error in oxygen energy-pitch angle distribution.

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

0.0

1.0e+10

-1.0e+31

Helium Error

helium_error

Poisson Error in helium energy-pitch angle distribution.

PT5.1S

PT20.4S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

0.0

1.0e+10

-1.0e+31

Filtered O+ Velocity

v_o_filtered_gei

Filtered O+ Velocity in GEI in spacecraft frame.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

O+ Velocity in GEI

v_o_gei

O+ Velocity in GEI in spacecraft frame.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

Spacecraft Velocity in GEI

v_sc_gei

Spacecraft Velocity in GEI.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

Convection Velocity in GEI

v_convect_gei

Convection Velocity in GEI derived from O+ velocity.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

Filtered O+ Velocity in GSE

v_o_filtered_gse

Filtered O+ Velocity in GSE in spacecraft frame.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

O+ Velocity in GSE in spacecraft frame

v_o_gse

O+ Velocity in GSE in spacecraft frame.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

Spacecraft Velocity in GSE

v_sc_gse

Spacecraft Velocity in GSE.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

Convection Velocity in GSE

v_convect_gse

Convection Velocity in GSE derived from O+ velocity.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

filtered O+ Velocity in SM in spacecraft frame

v_o_filtered_sm

filtered O+ Velocity in SM in spacecraft frame.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

O+ Velocity in SM in spacecraft frame

v_o_sm

O+ Velocity in SM in spacecraft frame.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

O+ Velocity in SM in spacecraft frame

v_sc_sm

O+ Velocity in SM in spacecraft frame.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

Convection Velocity in SM

v_convect_sm

Convection Velocity in SM derived from O+ velocity.

PT5.1S

PT20.4S

km/s

-11

11

-1.0e+31

H+ and O+ Deadtime flag

Time series defined by using: EPOCH

DeadTimeEn

H+ and O+ Deadtime flag.

PT5.1S

PT20.4S

0

1

255

He+ Deadtime flag

DeadTimeEn_Helium

He+ Deadtime flag.

PT5.1S

PT20.4S

0

1

255

Spacecraft Potential

sc_potential

Spacecraft Potential.

PT5.1S

PT20.4S

V

-60

60

-1.0000e+31

Spacecraft Potential Flag

DeadTimeEn_Helium

Spacecraft Potential Flag.

PT5.1S

PT20.4S

0

2

255

Spacecraft High Potential Warning

high_potential

Spacecraft High Potential Warning. High Potential Warning flag, 0: pot > -5V, 1: pot < -5V.

PT5.1S

PT20.4S

0

60

-1.0000e+31

Spacecraft Orbit Number

orbit_number

Spacecraft Orbit Number.

PT5.1S

PT20.4S

0

52000

4294967295

Spacecraft position, GEI coordinate System

fa_pos_gei

Spacecraft position, GEI coordinate System.

PT5.1S

PT20.4S

km

-12742

12742

-1.0000e+31

Spacecraft position, GEI coordinate System

fa_pos_gei

Spacecraft position in GEI coordinate System.

PT5.1S

PT20.4S

km

-12742

12742

-1.0000e+31

Spacecraft position, GSE coordinate System

fa_pos_gse

Spacecraft position in GSE coordinate System.

PT5.1S

PT20.4S

km

-12742

12742

-1.0000e+31

Spacecraft position, SM coordinate System

fa_pos_sm

Spacecraft position in SM coordinate System.

PT5.1S

PT20.4S

km

-12742

12742

-1.0000e+31

Spacecraft Altitude

altitude

Spacecraft Altitude.

PT5.1S

PT20.4S

km

300

4500

-1.0000e+31

Spacecraft Invariant Latitude

invariant_latitude

Spacecraft Invariant Latitude.

PT5.1S

PT20.4S

degree

0.0174532925>rad

-90

90

-1.0000e+31

Spacecraft Invariant Longitude

invariant_longitude

Spacecraft Invariant Longitude.

PT5.1S

PT20.4S

degree

0.0174532925>rad

-180

180

-1.0000e+31

Spacecraft Magnetic Local Time

mlt

Spacecraft Magnetic Local Time.

PT5.1S

PT20.4S

mlt

0

24

-1.0000e+31