{"ts1_l2_msc_bac_00000000_v01.cdf":{"CDFFileInfo":[{"FileVersion":"3.9.1"},{"Format":"SINGLE"},{"Majority":"COLUMN"},{"Encoding":"IBMPC"}],"CDFglobalAttributes":[{"Logical_file_id":[{"0":" "}]},{"Processing_level":[{"0":"2"}]},{"ParserConfig_version":[{"0":"0.6"}]},{"Data_version":[{"0":" "}]},{"SpiceQuasistatic_version":[{"0":"2"}]},{"SpiceLocation_version":[{"0":"3"}]},{"Discipline":[{"0":"Space Physics>Magnetospheric Science"}]},{"TisDecomp_revdate":[{"0":"2024-09-24"}]},{"Instrument_type":[{"0":"Magnetic Fields (space)"}]},{"PI_name":[{"0":"David Miles"}]},{"CoI_affiliation":[{"0":"The University of Iowa"}]},{"Mission_group":[{"0":"TRACERS"}]},{"ParserConfig_revdate":[{"0":"2025-11-21"}]},{"PI_affiliation":[{"0":"The University of Iowa"}]},{"Rules_of_use":[{"0":"https://tracers.physics.uiowa.edu/rules-use"}]},{"Logical_source":[{"0":"TS1_H0_MSC"}]},{"Project":[{"0":"LWS>Living With a Star"}]},{"Generated_by":[{"0":" "}]},{"TisDecomp_version":[{"0":"0.8.0"}]},{"Logical_source_description":[{"0":"TRACERS 1 Magnetic Search Coil (MSC), High Resolution data"}]},{"Descriptor":[{"0":"MSC>Magnetic Search Coil"}]},{"Source_name":[{"0":"TS1>TRACERS 1"}]},{"CoI_name":[{"0":"George Hospodarsky"}]},{"SPICE_FRAMES":[{"0":"TS1_TSCS"},{"1":"TS1_FAC"}]},{"Data_type":[{"0":"L2>Level 2 "}]},{"Time_resolution":[{"0":"0.5 ms"}]},{"Parents":[{"0":" "}]},{"SPICE_KERNELS":[{"0":"earth_2025_250826_2125_predict.bpc"},{"1":"earth_000101_260508_260209.bpc"},{"2":"pck00011.tpc"},{"3":"de430.bsp"},{"4":"naif0012.tls"},{"5":"ts_geophys_v1.0.tf"},{"6":"ts1_sclk_v1.0.tf"},{"7":"MAG_ck_IGRF-14_2015-2027_v1.0.bc"},{"8":"ts2_sclk_v1.0.tf"},{"9":"ts1_frame_v1.0.tf"},{"10":"ts2_frame_v1.0.tf"},{"11":"ts_ace-aci-reduced_v1.0.tf"},{"12":"ts1_peph_tle_2026-05-12_v01.bsp"},{"13":"ts1_pfac_tle_2026-05-12_v01.bc"}]},{"File_naming_convention":[{"0":"source_descriptor_datatype_yyyyMMdd"}]},{"MSCProcessor_version":[{"0":"1.2.0"}]},{"TITLE":[{"0":"TRACERS 1 Magnetic Search Coil (MSC) Waveforms, Level 2 (L2), Data"}]},{"TEXT":[{"0":"TRACERS 2 Magnetic Search Coil (MSC), Waveform data. This dataset \tconsists of time series sweeps of the 3-axis search coil. Each sweep \tprovides 1024 evenly spaced values sampled at 2048 Hz, thus the time \tduration of each sweep is 0.5 s. Each record in the file is a complete \tsweep. In the Region of Interest ROI) sweeps are spaced at 0.5 s and \tthus provide continuous data. If TRACERS is in Back Orbit (BOR) mode \tsweeps are sparsely spaced at 64.0 s apart for a 1/128th duty cycle."},{"1":"The 3-axis search coil data are provided in the body fixed TRACERS \tSpacecraft Coordinate System (TSCS) and Field-Aligned Coordinates (FAC). \tAll MSC data are calibrated in amplitude using the gain at 100 Hz. No \tphase calibration is applied to the L2 files."},{"2":"To obtain an amplitude and phase calibration over frequency, preform \ta fully complex Discrete Fourier Tansform (DFT) and apply the dimensionless \tcomplex calibration coefficients in table ts2_msc_calibration or  \tts2_msc_calibration.  If a fully calibrated waveform is desired, then take \tthe complex inverse transform. If your DFT is greater than 16384 points, \tinterpolate between points in the calibration table. If fewer are to be \ttransformed, then the calibration table can be sub-sampled to accommodate \ta shorter dataset."},{"3":"For the instrument paper see https://doi.org/10.1007/s11214-025-01200-7. \tFor coordinate system definition see appendix of  \thttps://doi.org/10.1007/s11214-025-01199-x."}]},{"Verified":[{"0":"0"}]}],"CDFVariables":[{"Epoch":[{"VarDescription":[{"DataType":"CDF_TIME_TT2000"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":"0000-01-01T00:00:00.000000000"}]},{"VarAttributes":[{"FILLVAL":"9999-12-31T23:59:59.999999999"},{"UNITS":"ns"},{"VAR_TYPE":"support_data"},{"DICT_KEY":"time>Epoch"},{"MONOTON":"INCREASE"},{"REFERENCE_POSITION":"Rotating Earth Geoid"},{"TIME_BASE":"J2000"},{"TIME_SCALE":"Terrestrial Time"},{"FORMAT":"I20"},{"CATDESC":"Time, start, in UTC"},{"FIELDNAM":"Time, start, in UTC"},{"VALIDMAX":"2050-01-01T00:00:00.000000000"},{"VALIDMIN":"2022-02-01T00:00:00.000000000"}]}]},{"ts1_location":[{"VarDescription":[{"DataType":"CDF_FLOAT"},{"NumElements":1},{"NumDims":1},{"DimSizes":[3]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"FILLVAL":"NaN"},{"UNITS":"km"},{"VAR_TYPE":"support_data"},{"FORMAT":"%.4e"},{"CATDESC":"Body-fixed EARTH centered location of TS1 in spherical coordinates"},{"FIELDNAM":"TS1 in spherical IAU_EARTH"},{"VALIDMAX":1.496E+8},{"VALIDMIN":-360.0},{"DEPEND_0":"Epoch"},{"LABL_PTR_1":"ts1_location_comp_lbl"},{"COORD_FRAME":"IAU_EARTH"},{"LABLAXIS":"TS1,IAU_EARTH"},{"VAR_NOTES":"An ISO 31-11 standard spherical system. The full component set is (r,theta,phi) where r is the radial direction, theta is the colatitude (which is 0 deg at the north pole) and phi is the eastward angle. Both theta, phi are assumed to be 0 deg if missing and r is assumed to be 1 if missing."}]}]},{"flags":[{"VarDescription":[{"DataType":"CDF_UINT1"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":254}]},{"VarAttributes":[{"FILLVAL":255},{"UNITS":" "},{"VAR_TYPE":"support_data"},{"FORMAT":"%d"},{"CATDESC":"Valildity Flag per Epoch"},{"FIELDNAM":"Validity Flags"},{"VALIDMAX":127},{"VALIDMIN":0},{"DEPEND_0":"Epoch"},{"VAR_NOTES":"Flag values as a bit field. There is one flag value for each epoch, i.e. one per packet. Larger values denote bigger problems. The value 32 (2^5) indicates that data are clipped an the maximum response of the search coil. Other values are yet to be defined."},{"DISPLAY":"time_series"}]}]},{"EpochOffset":[{"VarDescription":[{"DataType":"CDF_INT8"},{"NumElements":1},{"NumDims":1},{"DimSizes":[1024]},{"RecVariance":"NOVARY"},{"DimVariances":["VARY"]},{"NumWrittenRecords":1},{"PadValue":-9223372036854775807},{"BlockingFactor":1}]},{"VarAttributes":[{"UNITS":"ns"},{"VAR_TYPE":"support_data"},{"FORMAT":"%d"},{"CATDESC":"Sample offset from packet timestamp"},{"FIELDNAM":"Sample offset from Epoch"},{"VALIDMAX":499588719},{"VALIDMIN":77000},{"LABLAXIS":"Offset 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Hz"},{"VALIDMAX":1.0},{"VALIDMIN":-1.0},{"DEPEND_0":"cal_frequency"},{"LABL_PTR_1":"msc_calibration_lbl"},{"VAR_NOTES":"Full real and imaginary frequency response for phase and amplitude  correction in the frequency domain.  For each record, the real component is first [i, 0] and the imaginary component is second [i, 1].  (To use this table: (1) Perform FFT of desired length on each Epoch of waveform data. (2a) If your FFT is less then 16384 points sub-sample the frequency calibration table (2b) If your FFT is more then 16384 points interpolate between points in the calibration table (3) Divide positive FFT frequencies by listed complex calibration values (4) Divide negative FFT frequencies by complex conjugate of listed calibration     values. (5) Perform inverse FFT to return the signal to time domain if desired.  Note this calibration increases the amplitude of low frequency components by quite a bit.  In order to recover the spin frequency component you may need to  string multiple packets together in your FFT. This should *only* be done if  all Epoch values are near 0.5 seconds apart. "},{"DISPLAY":"time_series"}]}]},{"msc_calibration_lbl":[{"VarDescription":[{"DataType":"CDF_CHAR"},{"NumElements":9},{"NumDims":1},{"DimSizes":[2]},{"RecVariance":"NOVARY"},{"DimVariances":["VARY"]},{"NumWrittenRecords":1},{"PadValue":" "},{"BlockingFactor":1}]},{"VarAttributes":[{"VAR_TYPE":"metadata"},{"FORMAT":"%s"},{"CATDESC":"Labels for ts1_msc_calibration"},{"FIELDNAM":"Freq Response Labels"}]},{"VarData":["real","imaginary"]}]},{"msc_gain":[{"VarDescription":[{"DataType":"CDF_FLOAT"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"FILLVAL":-1.0E+31},{"UNITS":" "},{"VAR_TYPE":"support_data"},{"FORMAT":"%.8f"},{"CATDESC":"Coil Freq Response relative to 100 Hz"},{"FIELDNAM":"Coil Freq Response relative to 100 Hz"},{"VALIDMAX":1.10000002},{"VALIDMIN":0.0},{"DEPEND_0":"cal_frequency"},{"DISPLAY":"time_series"}]}]},{"msc_phase":[{"VarDescription":[{"DataType":"CDF_FLOAT"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"FILLVAL":-1.0E+31},{"UNITS":"degrees"},{"VAR_TYPE":"support_data"},{"FORMAT":"%.8f"},{"CATDESC":"Internal Relative Coil Phase Delay"},{"FIELDNAM":"Internal Relative Coil Phase Delay"},{"VALIDMAX":720.0},{"VALIDMIN":-1080.0},{"DEPEND_0":"cal_frequency"},{"VAR_NOTES":"These phase offsets are useful for comparison between points in the MSC dataset but are not referenced to an external source."},{"DISPLAY":"time_series"}]}]},{"ts1_l2_bac_tscs":[{"VarDescription":[{"DataType":"CDF_FLOAT"},{"NumElements":1},{"NumDims":2},{"DimSizes":[1024,3]},{"RecVariance":"VARY"},{"DimVariances":["VARY","VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"FILLVAL":"NaN"},{"UNITS":"nT"},{"VAR_TYPE":"data"},{"DICT_KEY":"magnetic_field>AC"},{"FORMAT":"%.3f"},{"CATDESC":"AC Magnetic field at 2048 Hz in TRACERS Spacecraft Coordinates (TSCS)"},{"FIELDNAM":"AC Magnetic field at 2048 Hz in TSCS"},{"VALIDMAX":82.5},{"VALIDMIN":-82.5},{"DEPEND_0":"Epoch"},{"COORD_FRAME":"TS1_TSCS"},{"LABLAXIS":"B!ac!n in TS1_TSCS"},{"DEPEND_1":"EpochOffset"},{"LABL_PTR_2":"ts1_l2_bac_tscs_comp_lbl"},{"DISPLAY_TYPE":"time_series"},{"SCALETYP":"linear"}]}]},{"ts1_l2_bac_tscs_comp_lbl":[{"VarDescription":[{"DataType":"CDF_CHAR"},{"NumElements":3},{"NumDims":1},{"DimSizes":[3]},{"RecVariance":"NOVARY"},{"DimVariances":["VARY"]},{"NumWrittenRecords":1},{"PadValue":" "},{"BlockingFactor":1}]},{"VarAttributes":[{"VAR_TYPE":"metadata"},{"FORMAT":"%s"},{"CATDESC":"ts1_l2_bac_tscs component labels"},{"FIELDNAM":"ts1_l2_bac_tscs components"}]},{"VarData":["B_x","B_y","B_z"]}]},{"ts1_l2_bac_fac":[{"VarDescription":[{"DataType":"CDF_FLOAT"},{"NumElements":1},{"NumDims":2},{"DimSizes":[1024,3]},{"RecVariance":"VARY"},{"DimVariances":["VARY","VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"FILLVAL":"NaN"},{"UNITS":"nT"},{"VAR_TYPE":"data"},{"DICT_KEY":"magnetic_field>AC"},{"FORMAT":"%.3f"},{"CATDESC":"AC Magnetic field at 2048 Hz in B-Field Aligned Coordinates (FAC)"},{"FIELDNAM":"AC Magnetic field at 2048 Hz in FAC"},{"VALIDMAX":82.5},{"VALIDMIN":-82.5},{"DEPEND_0":"Epoch"},{"COORD_FRAME":"TS1_FAC"},{"LABLAXIS":"B!ac!n in TS1_FAC"},{"DEPEND_1":"EpochOffset"},{"LABL_PTR_2":"ts1_l2_bac_fac_comp_lbl"},{"DISPLAY_TYPE":"time_series"},{"SCALETYP":"linear"}]}]},{"ts1_l2_bac_fac_comp_lbl":[{"VarDescription":[{"DataType":"CDF_CHAR"},{"NumElements":3},{"NumDims":1},{"DimSizes":[3]},{"RecVariance":"NOVARY"},{"DimVariances":["VARY"]},{"NumWrittenRecords":1},{"PadValue":" "},{"BlockingFactor":1}]},{"VarAttributes":[{"VAR_TYPE":"metadata"},{"FORMAT":"%s"},{"CATDESC":"ts1_l2_bac_fac component labels"},{"FIELDNAM":"ts1_l2_bac_fac components"}]},{"VarData":["B_x","B_y","B_z"]}]}],"EmptyAttributes":[{"VariableAttributes":["calDataSource","calDate","CAL_METHOD","CAL_DESCIPTION"]}]}}