{ "startDate": "2015-09-01T00:00Z", "stopDate": "2026-02-03T21:14:32Z", "sampleStartDate": "2026-02-03T21:04:53Z", "sampleStopDate": "2026-02-03T21:09:42Z", "cadence": "PT0.03S", "x_cadence_fraction": 0.9700512077794444, "x_cadence_note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms2/fpi/brst/l2/des-moms/2015/09/mms2_fpi_brst_l2_des-moms_20150901121114_v3.3.0.cdf. The most common cadence, 30000000 [ns] = PT0.03S, occurred for 97.0051% of the 18754 timesteps. ", "maxRequestDuration": "PT4H50S", "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesM.html#MMS2_FPI_BRST_L2_DES-MOMS", "contact": "J.Burch; C.Pollock, B.Giles @ SwRI, NASA/GSFC", "resourceID": "https://doi.org/10.48322/tryj-n584", "additionalMetadata": { "name": "SPASE", "contentURL": "https://spase-metadata.org/NASA/NumericalData/MMS/2/FastPlasmaInvestigation/DES/Burst/Level2/Moments/PT0.03S.html" }, "parameters": [ { "name": "Time", "type": "isotime", "units": "UTC", "length": 30, "fill": null, "x_description": "Default time", "x_cdf_NAME": "Epoch", "x_cdf_DataType": "CDF_TIME_TT2000" }, { "name": "mms2_des_errorflags_brst", "type": "double", "x_cdf_DataType": "CDF_UINT4", "description": "MMS2 FPI/DES 32-bit vector of data-quality indicators at burst-start time. Note: CDF_UINT4 data was converted to HAPI double.", "fill": "4.294967295E9", "units": "(0=Good)", "x_label": "FPI1/DES 32-bit error flags", "x_cdf_FORMAT": "I10", "x_cdf_FIELDNAM": "MMS2 FPI/DES dataQuality errorFlags", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_compressionloss_brst", "type": "integer", "x_cdf_DataType": "CDF_UINT1", "description": "---> MMS2 FPI/DES compression lossless/lossy indicator at survey-start time", "fill": "255", "units": "(0=lossless)", "x_label": "FPI1/DES compressFlag", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "MMS2 FPI/DES compression flag", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_steptable_parity_brst", "type": "integer", "x_cdf_DataType": "CDF_UINT1", "description": "---> MMS2 FPI/DES step table parity, this burst", "fill": "255", "units": "0, 1", "x_label": "FPI1/DES stepTbl par", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "MMS2 FPI/DES step table parity", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_startdelphi_count_brst", "type": "integer", "x_cdf_DataType": "CDF_UINT2", "description": "---> MMS2 FPI/DES Del-Phi (obs spin-phase) count at burst-start time", "fill": "65535", "units": "Count", "x_label": "FPI1/DES Obs Spin Phase", "x_cdf_FORMAT": "I4.4", "x_cdf_FIELDNAM": "MMS2 FPI/DES start Del-Phi count", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_startdelphi_angle_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES Del-Phi (obs spin-phase) angle at burst-start time", "fill": "-1.0E31", "units": "deg", "x_label": "FPI1/DES DelPhi ang", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES start Del-Phi angle", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_sector_despinp_brst", "type": "integer", "x_cdf_DataType": "CDF_UINT1", "description": "---> MMS2 FPI/DES sector de-Spin P value, this burst", "fill": "255", "units": "00-32", "x_label": "FPI1/DES deSpin P", "x_cdf_FORMAT": "I2.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES sector de-Spin P", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_pitchangdist_lowen_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron pitch-angle distribution for \"low\" energies during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES PAD_low", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES pitchAngDist_lowEn", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 30 ], "bins": [ { "name": "mms2_des_alpha_brst", "description": "(Constant) MMS FPI/DES burst sky-map constant pitch angles", "centers": [ 3, 9, 15, 21, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171, 177 ], "x_label": "FPI alpha", "units": "deg" } ] }, { "name": "mms2_des_pitchangdist_miden_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron pitch-angle distribution for \"mid\" energies during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES PAD_mid", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES pitchAngDist_midEn", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 30 ], "bins": [ { "name": "mms2_des_alpha_brst", "description": "(Constant) MMS FPI/DES burst sky-map constant pitch angles", "centers": [ 3, 9, 15, 21, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171, 177 ], "x_label": "FPI alpha", "units": "deg" } ] }, { "name": "mms2_des_pitchangdist_highen_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron pitch-angle distribution for \"high\" energies during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES PAD_high", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES pitchAngDist_highEn", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 30 ], "bins": [ { "name": "mms2_des_alpha_brst", "description": "(Constant) MMS FPI/DES burst sky-map constant pitch angles", "centers": [ 3, 9, 15, 21, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171, 177 ], "x_label": "FPI alpha", "units": "deg" } ] }, { "name": "mms2_des_energyspectr_px_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron energy spectrum \"near\" +X_DSC during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr,+X", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_pX", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_mx_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron energy spectrum \"near\" -X_DSC during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr,-X", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_mX", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_py_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron energy spectrum \"near\" +Y_DSC during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr,+Y", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_pY", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_my_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron energy spectrum \"near\" -Y_DSC during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr,-Y", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_mY", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_pz_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron energy spectrum \"near\" +Z_DSC during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr,+Z", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_pZ", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_mz_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron energy spectrum \"near\" -Z_DSC during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr,-Z", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_mZ", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_par_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron energy parallel spectrum 30 degrees parallel to B during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr, Parallel", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_par", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_anti_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron energy anti-parallel spectrum 30 degrees anti-parallel to B during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr, Antiparallel", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_anti", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_perp_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron energy perpendicular spectrum 60 degrees perpendicular to B during this burst", "fill": "-1.0E31", "units": null, "x_label": "FPI1/DES EnSpectr, Perpendicular", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_perp", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_energyspectr_omni_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES omni-directional electron energy spectrum during this burst", "fill": "-1.0E31", "units": "keV/(cm^2 s sr keV)", "x_label": "DEF_omni", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES energySpectr_omni", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 32 ] }, { "name": "mms2_des_numberdensity_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron number density during this burst", "fill": "-1.0E31", "units": "cm^-3", "x_label": "N", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES number density", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_numberdensity_err_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "---> MMS2 FPI/DES electron number density error during this burst", "fill": "-1.0E31", "units": "cm^-3", "x_label": "N_err", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES number density error", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_densityextrapolation_low_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES estimated (via extrapolation to 0) contribution to density integral below 10eV", "fill": "-1.0E31", "units": "cm^-3", "x_label": "N", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES density extrapolation (low)", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_densityextrapolation_high_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES estimated (via extrapolation to infinity) contribution to density integral above 30keV", "fill": "-1.0E31", "units": "cm^-3", "x_label": "N", "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES density extrapolation (high)", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mms2_des_bulkv_dbcs_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron bulk-velocity DBCS vector during this burst", "fill": "-1.0E31", "units": "km/s", "x_label": [ "Vx_DBCS", "Vy_DBCS", "Vz_DBCS" ], "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES DBCS bulk v", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 3 ] }, { "name": "mms2_des_bulkv_spintone_dbcs_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron bulk-velocity estimated spintone vector in DBCS during this burst", "fill": "-1.0E31", "units": "km/s", "x_label": [ "Vx_spintone_DBCS", "Vy_spintone_DBCS", "Vz_spintone_DBCS" ], "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES DBCS bulk v spintone", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 3 ] }, { "name": "mms2_des_bulkv_gse_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron bulk-velocity GSE vector during this burst", "fill": "-1.0E31", "units": "km/s", "x_label": [ "Vx_GSE", "Vy_GSE", "Vz_GSE" ], "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES GSE bulk v", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 3 ] }, { "name": "mms2_des_bulkv_spintone_gse_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron bulk-velocity estimated spintone vector in GSE during this burst", "fill": "-1.0E31", "units": "km/s", "x_label": [ "Vx_spintone_GSE", "Vy_spintone_GSE", "Vz_spintone_GSE" ], "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES GSE bulk v spintone", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 3 ] }, { "name": "mms2_des_bulkv_spin_dbcs_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron bulk-velocity spintone vector in DBCS during this burst", "fill": "-1.0E31", "units": "km/s", "x_label": [ "Vx_spin_DBCS", "Vy_spin_DBCS", "Vz_spin_DBCS" ], "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES DBCS bulk v spintone", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 3 ] }, { "name": "mms2_des_bulkv_spin_gse_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron bulk-velocity spintone vector in GSE during this burst", "fill": "-1.0E31", "units": "km/s", "x_label": [ "Vx_GSE", "Vy_GSE", "Vz_GSE" ], "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES GSE bulk v spintone", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 3 ] }, { "name": "mms2_des_prestensor_dbcs_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron pressure tensor DBCS matrix during this burst", "fill": "-1.0E31", "units": "nPa", "x_label": "P_DBCS", "x_labelComponents": [ [ "x", "y", "z" ], [ "x", "y", "z" ] ], "x_format": ".2e", "x_fractionDigits": "2", "x_cdf_FORMAT": "E12.2", "x_cdf_FIELDNAM": "MMS2 FPI/DES DBCS Pres", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 3, 3 ] }, { "name": "mms2_des_prestensor_gse_brst", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "MMS2 FPI/DES electron pressure tensor GSE matrix during this burst", "fill": "-1.0E31", "units": "nPa", "x_label": "P_GSE", "x_labelComponents": [ [ "x", "y", "z" ], [ "x", "y", "z" ] 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