2.3.1 spase://NASA/NumericalData/FAST/TEAMS/Level2/EnergyPitchAngleDistributions/PT5S FAST Time of Flight Energy Angle Mass Spectrograph (TEAMS) Energy-Pitch Angle Distributions, Level 2 (L2), 5 s Data 2020-05-20T15:38:11Z 2020-05-20T12:34:56.789Z Only known prior ReleaseDate of the metadata 2020-07-07T21:14:34Z Changed ResourceID from VSPO to NASA 2021-03-29T17:14:50Z Changed cdaweb.sci to cdaweb in links where appropriate 2025-05-06T15:38:11Z Added ObservedRegion. JMW 2026-04-17T15:38:11Z Added new parameters. JMW 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 spase://SMWG/Person/Lynn.M.Kistler PrincipalInvestigator spase://SMWG/Person/Robert.M.Candey MetadataContact spase://SMWG/Person/James.M.Weygand MetadataContact FAST Spacecraft web site, UNH http://www-ssg.sr.unh.edu Fast Auroral SnapshoT Explorer, FAST, web site, hosted by the Experimental Space Plasma Group, University of New Hampshire, UNH en FAST TEAMS instrument description web site, UNH http://www-ssg.sr.unh.edu/tof/Papers/3dPlasmaPap/instdesc.html Time-of-flight Energy Angle Mass Spectrograph, TEAMS, instrument description web site, hosted by the Experimental Space Plasma Group, University of New Hampshire, UNH en FAST Spacecraft web site, UCB http://sprg.ssl.berkeley.edu/fast/ Fast Auroral SnapshoT Explorer, FAST, web site, hosted by University of California, Berkeley, UCB en Klumpar, D.M., E. Mobius, L.M. Kistler, M. Popecki, E. Hertzberg, K. Crocker, M. Granoff, Li Tang, C.W. Carlson, J. McFadden, B. Klecker, F. Eberl, E. Kunneth, H. Kastle, M. Ertl, W.K. Peterson, E.G. Shelly and D. Hovestadt, The Time-of-Flight Energy, Angle, Mass Spectrograph (TEAMS) Experiment for FAST, Pfaff R.F. (eds), The FAST Mission, Springer, Dordrecht, 2001, DOI: 10.1007/978-94-010-0332-2_8. https://link.springer.com/chapter/10.1007/978-94-010-0332-2_8 FAST TEAMS instrument publication, in 'The FAST Mission' en NSSDC Master Catalog, FAST, TEAMS instrument https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1996-049A-02 General information concerning the FAST, Time of Flight Energy Angle Mass Spectrograph, TEAMS, instrument en spase://VSPO/NumericalData/FAST/TEAMS/Level2/EnergyPitchAngleDistributions/PT5S spase://SMWG/Repository/NASA/GSFC/SPDF Online Open HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/fast/teams/l2/ Access to Data in CDF Format via http from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=FAST_TEAMS_L2&index=sp_phys FAST_TEAMS_L2 Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb 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 CDAWeb Programmatic Data Access https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/FAST_TEAMS_L2/clientLibraryExample/ FAST_TEAMS_L2 Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary Please acknowledge the Principal Investigator L.M. Kistler. Please acknowledge the Data Providers and CDAWeb when using these Data. Calibrated spase://SMWG/Instrument/FAST/TEAMS EnergeticParticles InstrumentStatus 1996-09-20T00:00:00.000 2009-02-14T23:59:00.000 PT5S Earth.Magnetosphere Earth.NearSurface.Plasmasphere Earth.NearSurface.AuroralRegion Earth.NearSurface.PolarCap 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 Time 6.2798349819904e+13 6.3902887419904e+13 LinearScale 1990-01-01T00:00:00.000000000 2029-12-31T23:59:59.999999999 9999-12-31T23:59:59.999999999 Temporal 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 Time 6.2798349819904e+13 6.3902887419904e+13 LinearScale 1990-01-01T00:00:00.000000000 2029-12-31T23:59:59.999999999 9999-12-31T23:59:59.999999999 Temporal Delta Time delta_time Sample width: end time - start time PT5.1S PT20.4S 1 60 -1.0000e+31 Temporal Helium Delta Time delta_time_helium Sample width: end time - start time PT5.1S PT20.4S 1 60 -1.0000e+31 Temporal 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) Flux G13.6 LogScale 48 16 -1.0e+31 Proton Array EnergyFlux 1 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) Flux G13.6 LogScale 48 16 -1.0e+31 Ion Array EnergyFlux 8 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) Flux G13.6 LogScale 48 16 -1.0e+31 Ion Array EnergyFlux 2 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) Spectrogram H+ Flux G13.6 LogScale 48 Element 1 1 11200.0 Element 2 2 9560 Element 3 3 8060 Element 4 4 6610 Element 5 5 5540 Element 6 6 4780 Element 7 7 4040 Element 8 8 3300 Element 9 9 2760 Element 10 10 2390 Element 11 11 2020 Element 12 12 1660 Element 13 13 1380 Element 14 14 1200 Element 15 15 1010 Element 16 16 826 Element 17 17 691 Element 18 18 598 Element 19 19 504 Element 20 20 413 Element 21 21 346 Element 22 22 298 Element 23 23 252 Element 24 24 206 Element 25 25 173 Element 26 26 150 Element 27 27 126 Element 28 28 103 Element 29 29 86.4000 Element 30 30 74.7000 Element 31 31 63 Element 32 32 51.6000 Element 33 33 43.2000 Element 34 34 37.3000 Element 35 35 31.5000 Element 36 36 25.9000 Element 37 37 21.6000 Element 38 38 18.6000 Element 39 39 15.8000 Element 40 40 12.9000 Element 41 41 10.8000 Element 42 42 9.35000 Element 43 43 7.87000 Element 44 44 6.31000 Element 45 45 4.74000 Element 46 46 3.28000 Element 47 47 1.97000 Element 48 48 1.15000 0.0 1.0e+10 -1.0e+31 Proton Array Average EnergyFlux 1 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) Spectrogram O+ Flux G13.6 LogScale 48 Element 1 1 11200.0 Element 2 2 9560 Element 3 3 8060 Element 4 4 6610 Element 5 5 5540 Element 6 6 4780 Element 7 7 4040 Element 8 8 3300 Element 9 9 2760 Element 10 10 2390 Element 11 11 2020 Element 12 12 1660 Element 13 13 1380 Element 14 14 1200 Element 15 15 1010 Element 16 16 826 Element 17 17 691 Element 18 18 598 Element 19 19 504 Element 20 20 413 Element 21 21 346 Element 22 22 298 Element 23 23 252 Element 24 24 206 Element 25 25 173 Element 26 26 150 Element 27 27 126 Element 28 28 103 Element 29 29 86.4000 Element 30 30 74.7000 Element 31 31 63 Element 32 32 51.6000 Element 33 33 43.2000 Element 34 34 37.3000 Element 35 35 31.5000 Element 36 36 25.9000 Element 37 37 21.6000 Element 38 38 18.6000 Element 39 39 15.8000 Element 40 40 12.9000 Element 41 41 10.8000 Element 42 42 9.35000 Element 43 43 7.87000 Element 44 44 6.31000 Element 45 45 4.74000 Element 46 46 3.28000 Element 47 47 1.97000 Element 48 48 1.15000 0.0 1.0e+10 -1.0e+31 Ion Array Average EnergyFlux 8 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) Spectrogram He+ Flux G13.6 LogScale 48 Element 1 1 11200.0 Element 2 2 9560 Element 3 3 8060 Element 4 4 6610 Element 5 5 5540 Element 6 6 4780 Element 7 7 4040 Element 8 8 3300 Element 9 9 2760 Element 10 10 2390 Element 11 11 2020 Element 12 12 1660 Element 13 13 1380 Element 14 14 1200 Element 15 15 1010 Element 16 16 826 Element 17 17 691 Element 18 18 598 Element 19 19 504 Element 20 20 413 Element 21 21 346 Element 22 22 298 Element 23 23 252 Element 24 24 206 Element 25 25 173 Element 26 26 150 Element 27 27 126 Element 28 28 103 Element 29 29 86.4000 Element 30 30 74.7000 Element 31 31 63 Element 32 32 51.6000 Element 33 33 43.2000 Element 34 34 37.3000 Element 35 35 31.5000 Element 36 36 25.9000 Element 37 37 21.6000 Element 38 38 18.6000 Element 39 39 15.8000 Element 40 40 12.9000 Element 41 41 10.8000 Element 42 42 9.35000 Element 43 43 7.87000 Element 44 44 6.31000 Element 45 45 4.74000 Element 46 46 3.28000 Element 47 47 1.97000 Element 48 48 1.15000 0.0 1.0e+10 -1.0e+31 Ion Array Average EnergyFlux 2 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 TimeSeries Flag I5 LinearScale 0 15 255 Scalar Other 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 TimeSeries Flag I5 LinearScale 0 15 255 Scalar Other 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 TimeSeries Flag I5 LinearScale 0 15 255 Scalar Other Bin Energy Values Energy Bin centered Energy Value Array PT5.1S PT20.4S eV 1.602176565e-19>J Energy G12.3 LogScale 48 0.0 12000.0 -1.0e+31 Proton Ion Array Magnitude Energy 1 2 4 Bin Pitch Angles pitch_angle Bin centered Pitch Angle Value Array PT5.1S PT20.4S ° 0.0174532925>rad theta G10.4 LinearScale 16 0.0 360.0 -1.0e+31 Proton Ion Array DirectionAngle.PolarAngle ArrivalDirection 1 2 4 Loss Cone Angle loss_cone_angle Loss Cone Angle. Calculated from dipole magnetic field. PT5.1S PT20.4S ° 0.0174532925>rad 2 0.0 360.0 -1.0e+31 Proton Ion Array DirectionAngle ArrivalDirection 1 2 4 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 Cartesian SC 3 -180 65600 -1.0e+31 Vector Magnetic 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 Ion Array Average EnergyFlux 2 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 Ion Array Average EnergyFlux 16 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 Ion Array Average EnergyFlux 4 Filtered O+ Velocity v_o_filtered_gei Filtered O+ Velocity in GEI in spacecraft frame. PT5.1S PT20.4S km/s Cartesian GEI 3 -11 11 -1.0e+31 Ion Vector Velocity 16 O+ Velocity in GEI v_o_gei O+ Velocity in GEI in spacecraft frame. PT5.1S PT20.4S km/s Cartesian GEI 3 -11 11 -1.0e+31 Ion Vector Velocity 16 Spacecraft Velocity in GEI v_sc_gei Spacecraft Velocity in GEI. PT5.1S PT20.4S km/s Cartesian SC 3 -11 11 -1.0e+31 Vector Velocity Convection Velocity in GEI v_convect_gei Convection Velocity in GEI derived from O+ velocity. PT5.1S PT20.4S km/s Cartesian GEI 3 -11 11 -1.0e+31 Ion Vector Velocity 16 Filtered O+ Velocity in GSE v_o_filtered_gse Filtered O+ Velocity in GSE in spacecraft frame. PT5.1S PT20.4S km/s Cartesian GSE 3 -11 11 -1.0e+31 Ion Vector Velocity 16 O+ Velocity in GSE in spacecraft frame v_o_gse O+ Velocity in GSE in spacecraft frame. PT5.1S PT20.4S km/s Cartesian GSE 3 -11 11 -1.0e+31 Ion Vector Velocity 16 Spacecraft Velocity in GSE v_sc_gse Spacecraft Velocity in GSE. PT5.1S PT20.4S km/s Cartesian GSE 3 -11 11 -1.0e+31 Vector Velocity Convection Velocity in GSE v_convect_gse Convection Velocity in GSE derived from O+ velocity. PT5.1S PT20.4S km/s Cartesian GSE 3 -11 11 -1.0e+31 Ion Vector Velocity 16 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 Cartesian SM 3 -11 11 -1.0e+31 Ion Vector Velocity 16 O+ Velocity in SM in spacecraft frame v_o_sm O+ Velocity in SM in spacecraft frame. PT5.1S PT20.4S km/s Cartesian SM 3 -11 11 -1.0e+31 Ion Vector Velocity 16 O+ Velocity in SM in spacecraft frame v_sc_sm O+ Velocity in SM in spacecraft frame. PT5.1S PT20.4S km/s Cartesian SM 3 -11 11 -1.0e+31 Ion Vector Velocity 16 Convection Velocity in SM v_convect_sm Convection Velocity in SM derived from O+ velocity. PT5.1S PT20.4S km/s Cartesian SM 3 -11 11 -1.0e+31 Ion Vector Velocity 16 H+ and O+ Deadtime flag Time series defined by using: EPOCH DeadTimeEn H+ and O+ Deadtime flag. PT5.1S PT20.4S 0 1 255 Scalar Other He+ Deadtime flag DeadTimeEn_Helium He+ Deadtime flag. PT5.1S PT20.4S 0 1 255 Scalar Other Spacecraft Potential sc_potential Spacecraft Potential. PT5.1S PT20.4S V -60 60 -1.0000e+31 Scalar Potential Spacecraft Potential Flag DeadTimeEn_Helium Spacecraft Potential Flag. PT5.1S PT20.4S 0 2 255 Scalar Other 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 Scalar Other Spacecraft Orbit Number orbit_number Spacecraft Orbit Number. PT5.1S PT20.4S 0 52000 4294967295 Scalar Temporal Spacecraft position, GEI coordinate System fa_pos_gei Spacecraft position, GEI coordinate System. PT5.1S PT20.4S km Cartesian GEI 3 -12742 12742 -1.0000e+31 Scalar Temporal Spacecraft position, GEI coordinate System fa_pos_gei Spacecraft position in GEI coordinate System. PT5.1S PT20.4S km Cartesian GEI 3 -12742 12742 -1.0000e+31 Scalar Positional Spacecraft position, GSE coordinate System fa_pos_gse Spacecraft position in GSE coordinate System. PT5.1S PT20.4S km Cartesian GSE 3 -12742 12742 -1.0000e+31 Scalar Positional Spacecraft position, SM coordinate System fa_pos_sm Spacecraft position in SM coordinate System. PT5.1S PT20.4S km Cartesian SM 3 -12742 12742 -1.0000e+31 Scalar Positional Spacecraft Altitude altitude Spacecraft Altitude. PT5.1S PT20.4S km 300 4500 -1.0000e+31 Scalar Positional Spacecraft Invariant Latitude invariant_latitude Spacecraft Invariant Latitude. PT5.1S PT20.4S degree 0.0174532925>rad -90 90 -1.0000e+31 Scalar Positional Spacecraft Invariant Longitude invariant_longitude Spacecraft Invariant Longitude. PT5.1S PT20.4S degree 0.0174532925>rad -180 180 -1.0000e+31 Scalar Positional Spacecraft Magnetic Local Time mlt Spacecraft Magnetic Local Time. PT5.1S PT20.4S mlt 0 24 -1.0000e+31 Scalar Positional