{
  "CDFFileInfo": {
    "FileVersion": "3.9.0",
    "Format": "SINGLE",
    "Majority": "COLUMN",
    "Encoding": "IBMPC"
  },
  "CDFglobalAttributes": {
    "TITLE": "LEXI> Lunar Environment Heliospheric X-ray Imager",
    "Project": "CLPS>Commercial Lunar Payload Services",
    "Discipline": "Space Physics>Magnetospheric Science",
    "Source_name": "BGM1>Blue Ghost Mission 1",
    "Descriptor": "LEXI>Lunar Environment Heliospheric X-ray Imager",
    "Data_type": "L1c>Level 1c Data",
    "Data_version": " ",
    "TEXT": "The lunar environment heliophysics X-ray imager (LEXI) mission.BM Walsh, et al., Space Sci. Rev., 2024https://doi.org/10.1007/s11214-024-01063-4",
    "MODS": " ",
    "Logical_file_id": " ",
    "Logical_source": "clps-bgm1_lexi_l1c-photons",
    "Logical_source_description": "Lunar Environment Heliophysics X-ray Imager (LEXI) Level 1c photon event data",
    "PI_name": "B. Walsh",
    "PI_affiliation": "Boston U.",
    "Mission_group": "Moon",
    "Instrument_type": "Imaging and Remote Sensing(Magnetosphere/Earth) ",
    "File_naming_convention": "source_datatype_descriptor_yyyyMMddHH",
    "Generated_by": "Ramiz A. Qudsi",
    "Generation_date": " ",
    "DOI": " "
  },
  "CDFVariables": {
    "Epoch": {
      "VarDescription": {
        "DataType": "CDF_TIME_TT2000",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": "0000-01-01T00:00:00.000000000",
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Time, centered, in CDF Epoch",
        "DICT_KEY": "time>Epoch",
        "FIELDNAM": "Time",
        "FILLVAL": "9999-12-31T23:59:59.999999999",
        "LABLAXIS": "Epoch",
        "MONOTON": "INCREASE",
        "SCALEMAX": "2025-03-16T23:59:59.000000000",
        "SCALEMIN": "2025-03-02T00:00:00.000000000",
        "TIME_BASE": "0 AD",
        "UNITS": "ms",
        "VALIDMAX": "2025-03-16T21:45:59.000000000",
        "VALIDMIN": "2025-03-02T08:00:00.000000000",
        "VAR_NOTES": " ",
        "VAR_TYPE": "support_data",
        "x_UNITS": "ms",
        "x_LABLAXIS": "Epoch"
      }
    },
    "lexi_sc_eph_epoch": {
      "VarDescription": {
        "DataType": "CDF_TIME_TT2000",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": "0000-01-01T00:00:00.000000000",
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Time corresponding to the spacecraft Ephemeris",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "spacecraft_position>lexi_sc_eph_epoch",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Time of spacecraft ephemeris",
        "FILLVAL": "9999-12-31T23:59:59.999999999",
        "LABLAXIS": "LEXI Spacecraft Ephemeris Epoch",
        "MONOTON": "INCREASE",
        "SCALEMAX": "2025-03-16T23:59:59.000000000",
        "SCALEMIN": "2025-03-02T00:00:00.000000000",
        "TIME_BASE": "0 AD",
        "UNITS": "ms",
        "VALIDMAX": "2025-03-16T21:45:59.000000000",
        "VALIDMIN": "2025-03-02T08:00:00.000000000",
        "VAR_NOTES": "This is the time for the spacecraft ephemeris data.The extent of the ephemeris times is the same as the extent of the photon data, but the cadence of the ephemeris data is 10 minutes. One should use this variable to properly interpret other spacecraft position variables and lunar position variables as well as thje solar zenith angle.",
        "VAR_TYPE": "support_data",
        "x_UNITS": "ms",
        "x_LABLAXIS": "LEXI Spacecraft Ephemeris Epoch"
      }
    },
    "Unix_time": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Time, centered, in Unix Epoch seconds",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "time>Unix_time",
        "FIELDNAM": "Time in Unix Epoch",
        "FILLVAL": -1e+31,
        "FORMAT": "f13.1",
        "LABLAXIS": "Unix Time",
        "MONOTON": "INCREASE",
        "SCALEMAX": 1742169599,
        "SCALEMIN": 1740873600.0,
        "UNITS": "s",
        "VALIDMAX": 1742159748,
        "VALIDMIN": 1740902400.0,
        "VAR_NOTES": " ",
        "VAR_TYPE": "support_data",
        "x_UNITS": "s",
        "x_LABLAXIS": "Unix Time"
      }
    },
    "photon_x_mcp": {
      "VarDescription": {
        "DataType": "CDF_FLOAT",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Photon position in detector coordinates, X, scalar",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "position>photon_x_mcp",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Photon position in detector coordinates, X",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "X MCP",
        "SCALEMAX": 5.0,
        "SCALEMIN": -5.0,
        "UNITS": "cm",
        "VALIDMAX": 5.0,
        "VALIDMIN": -5.0,
        "VAR_NOTES": " ",
        "VAR_TYPE": "data",
        "x_UNITS": "cm",
        "x_LABLAXIS": "X MCP"
      }
    },
    "photon_y_mcp": {
      "VarDescription": {
        "DataType": "CDF_FLOAT",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Photon position in detector coordinates, Y, scalar",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "position>photon_y_mcp",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Photon position in detector coordinates, Y",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Y MCP",
        "SCALEMAX": 5.0,
        "SCALEMIN": -5.0,
        "UNITS": "cm",
        "VALIDMAX": 5.0,
        "VALIDMIN": -5.0,
        "VAR_NOTES": " ",
        "VAR_TYPE": "data",
        "x_UNITS": "cm",
        "x_LABLAXIS": "Y MCP"
      }
    },
    "photon_RA": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Right Ascension angle of measured photon in J2000 frame centered on LEXI, scalar.",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "position>photon_RA",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Right Ascension in J2000 frame",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "RA",
        "SCALEMAX": 360.0,
        "SCALEMIN": 0.0,
        "UNITS": "deg",
        "VALIDMAX": 360.0,
        "VALIDMIN": 0.0,
        "VAR_NOTES": " ",
        "VAR_TYPE": "data",
        "x_UNITS": "deg",
        "x_LABLAXIS": "RA"
      }
    },
    "photon_Dec": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Declination angle of measured photon in J2000 frame centered on LEXI, scalar.",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "position>photon_Dec",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Declination in J2000 frame",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "DEC",
        "SCALEMAX": 90.0,
        "SCALEMIN": -90.0,
        "UNITS": "deg",
        "VALIDMAX": 90.0,
        "VALIDMIN": -90.0,
        "VAR_NOTES": " ",
        "VAR_TYPE": "data",
        "x_UNITS": "deg",
        "x_LABLAXIS": "DEC"
      }
    },
    "photon_az": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Azimuth angle of the measured photon in the local topocentric frame, scalar.",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "position>photon_az",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Photon azimuth angle in the local topocentric coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Azimuth",
        "SCALEMAX": 360.0,
        "SCALEMIN": 0.0,
        "UNITS": "deg",
        "VALIDMAX": 360.0,
        "VALIDMIN": 0.0,
        "VAR_NOTES": "The local topocentric frame is centered on LEXI and is defined with the azimuth angle measured from North, through East .",
        "VAR_TYPE": "data",
        "x_UNITS": "deg",
        "x_LABLAXIS": "Azimuth"
      }
    },
    "photon_el": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Elevation angle of the measured photon in the local topocentric frame, scalar.",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "position>photon_el",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Photon elevation angle in the local topocentric coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Elevation",
        "SCALEMAX": 90.0,
        "SCALEMIN": -90.0,
        "UNITS": "deg",
        "VALIDMAX": 90.0,
        "VALIDMIN": -90.0,
        "VAR_NOTES": "The local topocentric frame is centered on LEXI and is defined with the elevation angle measured positive towards zenith with 0 degrees at the local horizon.",
        "VAR_TYPE": "data",
        "x_UNITS": "deg",
        "x_LABLAXIS": "Elevation"
      }
    },
    "lexi_counts_per_sec": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Counts per second as observed by LEXI in its field of view, scalar",
        "DEPEND_0": "Epoch",
        "DICT_KEY": "counts>lexi_counts_per_sec",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Counts per second",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Counts/sec",
        "SCALEMAX": 1000000.0,
        "SCALEMIN": 0.0,
        "UNITS": "counts/sec",
        "VALIDMAX": 1000000.0,
        "VALIDMIN": 0.0,
        "VAR_NOTES": " ",
        "VAR_TYPE": "data",
        "x_UNITS": "counts/sec",
        "x_LABLAXIS": "Counts/sec"
      }
    },
    "lexi_sc_pos_gse_x": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "LEXI spacecraft position in GSE coordinates, scalar",
        "DEPEND_0": "lexi_sc_eph_epoch",
        "DICT_KEY": "spacecraft_position>lexi_sc_pos_gse_x",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "x-component of LEXI spacecraft position in GSE coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "LEXI SC GSE X",
        "SCALEMAX": 1000000.0,
        "SCALEMIN": -1000000.0,
        "UNITS": "km",
        "VALIDMAX": 1000000.0,
        "VALIDMIN": -1000000.0,
        "VAR_NOTES": "The cadence of ephemeris data is 10 minutes. One should use lexi_sc_eph_epoch to properly interpret these values.",
        "VAR_TYPE": "support_data",
        "x_UNITS": "km",
        "x_LABLAXIS": "LEXI SC GSE X"
      }
    },
    "lexi_sc_pos_gse_y": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "LEXI spacecraft position in GSE coordinates, scalar",
        "DEPEND_0": "lexi_sc_eph_epoch",
        "DICT_KEY": "spacecraft_position>lexi_sc_pos_gse_y",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "y-component of LEXI spacecraft position in GSE coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "LEXI SC GSE Y",
        "SCALEMAX": 1000000.0,
        "SCALEMIN": -1000000.0,
        "UNITS": "km",
        "VALIDMAX": 1000000.0,
        "VALIDMIN": -1000000.0,
        "VAR_NOTES": "The cadence of ephemeris data is 10 minutes. One should use lexi_sc_eph_epoch to properly interpret these values.",
        "VAR_TYPE": "support_data",
        "x_UNITS": "km",
        "x_LABLAXIS": "LEXI SC GSE Y"
      }
    },
    "lexi_sc_pos_gse_z": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "LEXI spacecraft position in GSE coordinates, scalar",
        "DEPEND_0": "lexi_sc_eph_epoch",
        "DICT_KEY": "spacecraft_position>lexi_sc_pos_gse_z",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "z-component of LEXI spacecraft position in GSE coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "LEXI SC GSE Z",
        "SCALEMAX": 1000000.0,
        "SCALEMIN": -1000000.0,
        "UNITS": "km",
        "VALIDMAX": 1000000.0,
        "VALIDMIN": -1000000.0,
        "VAR_NOTES": "The cadence of ephemeris data is 10 minutes. One should use lexi_sc_eph_epoch to properly interpret these values.",
        "VAR_TYPE": "support_data",
        "x_UNITS": "km",
        "x_LABLAXIS": "LEXI SC GSE Z"
      }
    },
    "moon_pos_gse_x": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Moon position in GSE coordinates, scalar",
        "DEPEND_0": "lexi_sc_eph_epoch",
        "DICT_KEY": "lunar_position>moon_pos_gse_x",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "x-component of Moon position in GSE coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Moon GSE X",
        "SCALEMAX": 1000000.0,
        "SCALEMIN": -1000000.0,
        "UNITS": "km",
        "VALIDMAX": 1000000.0,
        "VALIDMIN": -1000000.0,
        "VAR_NOTES": "The cadence of ephemeris data is 10 minutes. One should use lexi_sc_eph_epoch to properly interpret these values.",
        "VAR_TYPE": "support_data",
        "x_UNITS": "km",
        "x_LABLAXIS": "Moon GSE X"
      }
    },
    "moon_pos_gse_y": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Moon position in GSE coordinates, scalar",
        "DEPEND_0": "lexi_sc_eph_epoch",
        "DICT_KEY": "lunar_position>moon_pos_gse_y",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "y-component of Moon position in GSE coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Moon GSE Y",
        "SCALEMAX": 1000000.0,
        "SCALEMIN": -1000000.0,
        "UNITS": "km",
        "VALIDMAX": 1000000.0,
        "VALIDMIN": -1000000.0,
        "VAR_NOTES": "The cadence of ephemeris data is 10 minutes. One should use lexi_sc_eph_epoch to properly interpret these values.",
        "VAR_TYPE": "support_data",
        "x_UNITS": "km",
        "x_LABLAXIS": "Moon GSE Y"
      }
    },
    "moon_pos_gse_z": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Moon position in GSE coordinates, scalar",
        "DEPEND_0": "lexi_sc_eph_epoch",
        "DICT_KEY": "lunar_position>moon_pos_gse_z",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "z-component of Moon position in GSE coordinates",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Moon GSE Z",
        "SCALEMAX": 1000000.0,
        "SCALEMIN": -1000000.0,
        "UNITS": "km",
        "VALIDMAX": 1000000.0,
        "VALIDMIN": -1000000.0,
        "VAR_NOTES": "The cadence of ephemeris data is 10 minutes. One should use lexi_sc_eph_epoch to properly interpret these values.",
        "VAR_TYPE": "support_data",
        "x_UNITS": "km",
        "x_LABLAXIS": "Moon GSE Z"
      }
    },
    "sza": {
      "VarDescription": {
        "DataType": "CDF_DOUBLE",
        "NumDims": 0,
        "NumElements": 1,
        "PadValue": -1e+30,
        "RecVariance": "VARY"
      },
      "VarAttributes": {
        "AVG_TYPE": " ",
        "CATDESC": "Solar zenith angle at the landing site, scalar",
        "DEPEND_0": "lexi_sc_eph_epoch",
        "DICT_KEY": "solar_zenith_angle>sza",
        "DISPLAY_TYPE": "default_dimension",
        "FIELDNAM": "Solar zenith angle at LEXI location",
        "FILLVAL": -1e+31,
        "FORMAT": "f10.1",
        "LABLAXIS": "Solar Zenith Angle",
        "SCALEMAX": 90.0,
        "SCALEMIN": -90.0,
        "UNITS": "deg",
        "VALIDMAX": 90.0,
        "VALIDMIN": -90.0,
        "VAR_NOTES": "The solar zenith angle is computed at the landing location. The landing site is located at Lunar Latitude and Longitude of (18.56, 61.81) degrees",
        "VAR_TYPE": "support_data",
        "x_UNITS": "deg",
        "x_LABLAXIS": "Solar Zenith Angle"
      }
    }
  }
}