{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_6_1.xsd",
    "_Note": "Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness.",
    "Version": "2.6.1",
    "_MasterURL": "https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/imap_idex_l2a_sci-10days_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": null,
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "IMAP Mission IDEX Instrument Level-2A 10-Day Data",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "imap_idex_l2a_sci-10days",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "The Interstellar Dust Experiment (IDEX) is a time-of-flight (TOF) dust impact ionization mass spectrometer on the IMAP mission that provides the elemental composition, speed, and mass distributions of interstellar dust and interplanetary dust particles. Each record contains the data from a single dust impact. See https://imap.princeton.edu/spacecraft/instruments/interstellar-dust-experiment-idex for more details. ",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": "Users should acknowledge the sources of data used in all publications, presentations, and reports using an appropriate DOI. Appropriate acknowledgement to institutions, personnel, and funding agencies should be given, including acknowledging the IMAP Mission Principal Investigator, Prof. David J. McComas of Princeton University (Contract #80GSFC19C0027). IMAP Rules-of-the-Road for data usage can be found in the IMAP CMAD. ",
        "_Acknowledgement": "Source: Master/CDFglobalAttributes/Acknowledgement",
        "_Rights": {
          "Name": "SPDX",
          "Description": "Creative Commons Zero v1.0 Universal",
          "URL": "https://spdx.org/licenses/CC0-1.0.html",
          "SchemeURI": "https://spdx.org/licenses/"
        },
        "InformationURL": [
          {
            "URL": "https://imap.princeton.edu/",
            "Name": "IMAP The Interstellar Mapping and Acceleration Probe",
            "Description": " ",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "URL": "https://link.springer.com/collections/djacjcecei",
            "Name": "IMAP Mission and Science Instruments Special Paper Collection",
            "Description": " ",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/imap/documents/cmad/",
            "Name": "IMAP Calibration and Measurement Algorithms Document (CMAD)",
            "Description": " ",
            "_Note": "URL also in all.xml. Using master."
          }
        ]
      },
      "Caveats": "All IMAP data products are publicly released and citable for use in publications. Please consult the IMAP team publications and personnel for further details on production, processing, and usage of these data. ",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": null,
      "_DOI": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json",
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/imap/idex/l2a/sci-10days",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "imap_idex_l2a_sci-10days_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/imap/idex/l2a/sci-10days",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "imap_idex_l2a_sci-10days_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "CDF",
            "CSV",
            "GIF",
            "NetCDF",
            "PNG",
            "PS",
            "PDF",
            "XML",
            "x_Script.IDL",
            "x_Script.Python",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service",
            "URL": "https://cdaweb.gsfc.nasa.gov/WebServices/",
            "Style": "WebService",
            "Description": "Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made.",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "CDF",
            "GIF",
            "PDF",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service user interface",
            "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=IMAP_IDEX_L2A_SCI-10DAYS",
            "Style": "WebService",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS",
            "Description": "Web service user interface for this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "x_Script.IDL",
            "x_Script.Python"
          ],
          "AccessURL": {
            "Name": "CDAWeb Python Script",
            "URL": "https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/IMAP_IDEX_L2A_SCI-10DAYS/clientLibraryExample/",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS",
            "Style": "WebService",
            "Description": "Web service that generates a Python script to access this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/SSCWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=IMAP_IDEX_L2A_SCI-10DAYS",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS",
            "Style": "x_Visualization",
            "Description": "Web Service to this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=IMAP_IDEX_L2A_SCI-10DAYS",
            "Style": "HAPI",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS",
            "Description": "Web Service to this product using the HAPI interface."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "x_Script.IDL",
            "x_Script.Javascript",
            "x_Script.MATLAB",
            "x_Script.Python",
            "x_Script.Autoplot",
            "x_Script.curl",
            "x_Script.wget"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Script in Multiple Languages",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=IMAP_IDEX_L2A_SCI-10DAYS&return=script",
            "Style": "HAPI",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS",
            "Description": "Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=IMAP_IDEX_L2A_SCI-10DAYS&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "IMAP_IDEX_L2A_SCI-10DAYS",
            "Description": "Web Service that generates plots. See https://hapi-server.org/plot/ for the API."
          }
        }
      ],
      "_AccessInformation": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2026-02-09T13:51:45Z",
          "StopDate": "2026-05-08T19:24:53Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT11.99991S",
        "_Cadence": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/idex/l2a/sci-10days/2026/imap_idex_l2a_sci-10days_20260420_v001.0017.cdf. The most common cadence, 11999909632 [ns] = PT11.99991S, occurred for 12.5000% of the 4 timesteps."
      },
      "Keyword": [
        "Interstellar Mapping and Acceleration Probe (from all.xml/observatory/description/@short)",
        "Interstellar Dust Experiment (from all.xml/instrument/description/@short)",
        "Solar Physics (from Master/CDFglobalAttributes/Discipline)",
        "Heliospheric Physics (from Master/CDFglobalAttributes/Discipline)",
        "IMAP (from Master/CDFglobalAttributes/Source_name)",
        "Interstellar Mapping and Acceleration Probe (from Master/CDFglobalAttributes/Source_name)",
        "L2A_SCI-10DAYS (from Master/CDFglobalAttributes/Data_type)",
        "Level-2A Science 10-Day Data (from Master/CDFglobalAttributes/Data_type)",
        "IDEX (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": null,
      "_ObservedRegion": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json",
      "ProcessingLevel": null,
      "_ProcessingLevel": "Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json",
      "InstrumentID": null,
      "MeasurementType": null,
      "Parameter2": [
        {
          "Name": "epoch",
          "ParameterKey": "epoch",
          "Description": "CATDESC: 'Time, number of nanoseconds since J2000 with leap seconds included'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.'",
          "Units": "ns",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "TOF Peak Fit Parameters",
          "ParameterKey": "tof_peak_fit_parameters",
          "Description": "Master CDF CATDESC: 'EMG fit parameters (mu, sigma, lambda) for TOF High peaks.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              500,
              3
            ]
          }
        },
        {
          "Name": "TOF Peak Area",
          "ParameterKey": "tof_peak_area_under_fit",
          "Description": "Master CDF CATDESC: 'Area under the EMG curve for each mass peak.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              500
            ]
          }
        },
        {
          "Name": "Mass Scale",
          "ParameterKey": "mass_scale",
          "Description": "Master CDF CATDESC: 'Preliminary time-to-mass scale for the TOF waveform.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "amu",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              8189
            ]
          }
        },
        {
          "Name": "Chi Square (TOF peak fits)",
          "ParameterKey": "tof_peak_chi_square",
          "Description": "Master CDF CATDESC: 'Chi squared value for the TOF peak emg fits.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              500
            ]
          }
        },
        {
          "Name": "Reduced Chi Square (TOF peak fits)",
          "ParameterKey": "tof_peak_reduced_chi_square",
          "Description": "Master CDF CATDESC: 'Reduced chi squared value for the TOF peak emg fits.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              500
            ]
          }
        },
        {
          "Name": "Position X",
          "ParameterKey": "ephemeris_position_x",
          "Description": "Master CDF CATDESC: 'Cartesian coord X positions for the IMAP spacecraft in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km",
          "FillValue": -1e+31
        },
        {
          "Name": "Position Y",
          "ParameterKey": "ephemeris_position_y",
          "Description": "Master CDF CATDESC: 'Cartesian coord Y positions for the IMAP spacecraft in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km",
          "FillValue": -1e+31
        },
        {
          "Name": "Position Z",
          "ParameterKey": "ephemeris_position_z",
          "Description": "Master CDF CATDESC: 'Cartesian coord Z positions for the IMAP spacecraft in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km",
          "FillValue": -1e+31
        },
        {
          "Name": "Velocity X",
          "ParameterKey": "ephemeris_velocity_x",
          "Description": "Master CDF CATDESC: 'Velocity X positions for the IMAP spacecraft in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31
        },
        {
          "Name": "Velocity Y",
          "ParameterKey": "ephemeris_velocity_y",
          "Description": "Master CDF CATDESC: 'Velocity Y positions for the IMAP spacecraft in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31
        },
        {
          "Name": "Velocity Z",
          "ParameterKey": "ephemeris_velocity_z",
          "Description": "Master CDF CATDESC: 'Velocity Z positions for the IMAP spacecraft in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31
        },
        {
          "Name": "Longitude",
          "ParameterKey": "longitude",
          "Description": "Master CDF CATDESC: 'Longitude of the dust event as observed from Earth in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "Degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Latitude",
          "ParameterKey": "latitude",
          "Description": "Master CDF CATDESC: 'Latitude of the dust event as observed from Earth in the ECLIPJ2000 frame.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "Degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Spin Phase",
          "ParameterKey": "spin_phase",
          "Description": "Master CDF CATDESC: 'IMAP Spin Phase'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "Degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Solar Longitude",
          "ParameterKey": "solar_longitude",
          "Description": "Master CDF CATDESC: 'Solar Longitude of the IMAP spacecraft'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "Degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Low Sample Rate Time",
          "ParameterKey": "time_low_sample_rate",
          "Description": "Master CDF CATDESC: 'Low sample rate time steps for a dust event.'. Master CDF VAR_NOTES: 'The low sample rate is 4.0625 MHz, so adjacent samples are separated by approximately 1/4.0625 microseconds.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "microseconds",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              512
            ]
          }
        },
        {
          "Name": "High Sample Rate Time",
          "ParameterKey": "time_high_sample_rate",
          "Description": "Master CDF CATDESC: 'High sample rate time steps for a dust event.'. Master CDF VAR_NOTES: 'The high sample rate in microseconds. Steps are approximately 1/260 microseconds in duration. Used by the TOF_High, TOF_Mid, and TOF_Low variables.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "microseconds",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              8189
            ]
          }
        },
        {
          "Name": "Target Low Fit Parameters",
          "ParameterKey": "target_low_fit_parameters",
          "Description": "Master CDF CATDESC: 'Fitted parameters for Target Low impact signal.'. Master CDF VAR_NOTES: 'Parameters include time of impact, constant offset, amplitude, rise time, discharge time.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              5
            ]
          }
        },
        {
          "Name": "Target Low Impact Charge",
          "ParameterKey": "target_low_impact_charge",
          "Description": "Master CDF CATDESC: 'Total charge from the dust impact on Target Low (TL) channel derived from the fitted curve.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "pC",
          "FillValue": -1e+31
        },
        {
          "Name": "Estimated Velocity (Target Low)",
          "ParameterKey": "target_low_velocity_estimate",
          "Description": "Master CDF CATDESC: 'Estimated particle velocity from Target Low signal based on impact charge.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31
        },
        {
          "Name": "Estimated Dust Mass (Target Low)",
          "ParameterKey": "target_low_dust_mass_estimate",
          "Description": "Master CDF CATDESC: 'Estimated dust mass from Target Low signal based on impact charge.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "Kg",
          "FillValue": -1e+31
        },
        {
          "Name": "Chi Square (Target Low)",
          "ParameterKey": "target_low_chi_squared",
          "Description": "Master CDF CATDESC: 'Chi squared value for the Target Low signal fit.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Reduced Chi Square (Target Low)",
          "ParameterKey": "target_low_reduced_chi_squared",
          "Description": "Master CDF CATDESC: 'Reduced chi squared value for the Target Low signal fit.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Target Low Fit results",
          "ParameterKey": "target_low_fit_results",
          "Description": "Master CDF CATDESC: 'Values of Target Low signal fit evaluated at each time point.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "pC",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              512
            ]
          }
        },
        {
          "Name": "Target High Fit Parameters",
          "ParameterKey": "target_high_fit_parameters",
          "Description": "Master CDF CATDESC: 'Fitted parameters for Target High impact signal.'. Master CDF VAR_NOTES: 'Parameters include time of impact, constant offset, amplitude, rise time, discharge time.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              5
            ]
          }
        },
        {
          "Name": "Target High Impact Charge",
          "ParameterKey": "target_high_impact_charge",
          "Description": "Master CDF CATDESC: 'Charge from the dust impact on Target High (TH) derived from the fitted curve.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "pC",
          "FillValue": -1e+31
        },
        {
          "Name": "Estimated Velocity (Target High)",
          "ParameterKey": "target_high_velocity_estimate",
          "Description": "Master CDF CATDESC: 'Estimated particle velocity from Target High signal based on impact charge.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31
        },
        {
          "Name": "Estimated Dust Mass (Target High)",
          "ParameterKey": "target_high_dust_mass_estimate",
          "Description": "Master CDF CATDESC: 'Estimated dust mass from Target High signal based on impact charge.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "Kg",
          "FillValue": -1e+31
        },
        {
          "Name": "Chi Square (Target High)",
          "ParameterKey": "target_high_chi_squared",
          "Description": "Master CDF CATDESC: 'Chi squared value for the Target High signal fit.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Reduced Chi Square (Target High)",
          "ParameterKey": "target_high_reduced_chi_squared",
          "Description": "Master CDF CATDESC: 'Reduced chi-square value for the Target High waveform fit.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Target High Fit Results",
          "ParameterKey": "target_high_fit_results",
          "Description": "Master CDF CATDESC: 'Values of Target High signal fit evaluated at each time point.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "pC",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              512
            ]
          }
        },
        {
          "Name": "Ion Grid Fit Parameters",
          "ParameterKey": "ion_grid_fit_parameters",
          "Description": "Master CDF CATDESC: 'Fitted parameters for Ion Grid impact signal.'. Master CDF VAR_NOTES: 'Parameters include time of impact, constant offset, amplitude, rise time, discharge time.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              5
            ]
          }
        },
        {
          "Name": "Ion Grid Impact Charge",
          "ParameterKey": "ion_grid_impact_charge",
          "Description": "Master CDF CATDESC: 'Charge from the dust impact on Ion Grid (IG) channel derived from the fitted curve.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "pC",
          "FillValue": -1e+31
        },
        {
          "Name": "Estimated Velocity (Ion Grid)",
          "ParameterKey": "ion_grid_velocity_estimate",
          "Description": "Master CDF CATDESC: 'Estimated particle velocity from Ion Grid signal based on impact charge.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "km/s",
          "FillValue": -1e+31
        },
        {
          "Name": "Estimated Dust Mass (Ion Grid)",
          "ParameterKey": "ion_grid_dust_mass_estimate",
          "Description": "Master CDF CATDESC: 'Estimated dust mass from Ion Grid signal based on impact charge.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "Kg",
          "FillValue": -1e+31
        },
        {
          "Name": "Chi Square (Ion Grid)",
          "ParameterKey": "ion_grid_chi_squared",
          "Description": "Master CDF CATDESC: 'Chi squared value for the Ion Grid signal fit.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Reduced Chi Square (Ion Grid)",
          "ParameterKey": "ion_grid_reduced_chi_squared",
          "Description": "Master CDF CATDESC: 'Reduced chi squared value for the Ion Grid signal fit.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Ion Grid Fit Results",
          "ParameterKey": "ion_grid_fit_results",
          "Description": "Master CDF CATDESC: 'Values of Ion Grid signal fit evaluated at each time point.'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "pC",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              512
            ]
          }
        },
        {
          "Name": "Mass Scale Alias",
          "ParameterKey": "mass",
          "Description": "Master CDF CATDESC: 'Mass-scale output retained for compatibility with the L2A product structure.'. Master CDF VAR_NOTES: 'Mass-scale output retained for compatibility with the current L2A product structure. This variable is not intended to be the primary science-facing mass-scale output.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": "amu",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              8189
            ]
          }
        },
        {
          "Name": "TOF Peak Kappa",
          "ParameterKey": "tof_peak_kappa",
          "Description": "Master CDF CATDESC: 'Mass-scale alignment metric for the TOF peak solution.'. Master CDF VAR_NOTES: 'Kappa measures how closely detected TOF peaks align with integer mass positions on the preliminary mass scale.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "TOF Signal to Noise Ratio",
          "ParameterKey": "tof_snr",
          "Description": "Master CDF CATDESC: 'Signal-to-noise ratio of the TOF High waveform.'. Master CDF VAR_NOTES: 'Computed relative to a pre-impact baseline window.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is epoch.'",
          "Units": " ",
          "FillValue": -1e+31
        }
      ]
    }
  }
}