{
  "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-2.7.2.xsd",
    "Version": "2.7.2",
    "MetadataRightsList": {
      "Rights": {
        "SchemeURI": "https://spdx.org/licenses/",
        "RightsIdentifierScheme": "SPDX",
        "RightsIdentifier": "CC0-1.0",
        "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
        "RightsName": "Creative Commons Zero v1.0 Universal",
        "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions"
      }
    },
    "NumericalData": {
      "ResourceID": "spase://NOAA/NumericalData/GOES/18/EXIS/XRS/Science/L1B/PT1S",
      "NamingAuthority": "NOAA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "GOES-18 EXIS/XRS Science Level 1b X-ray Irradiance",
        "AlternateName": "EXIS XRS L1b Science-Quality Solar Flux: X-Ray",
        "ReleaseDate": "2026-10-20T00:08:46Z",
        "RevisionHistory": {
          "RevisionEvent": {
            "ReleaseDate": "2026-10-20T00:08:46Z",
            "Note": "Initial metadata creation. SY"
          }
        },
        "Description": "GOES-18 Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) X-Ray Sensor (XRS) science-quality Level 1b data in daily aggregated NetCDF-4 files. The product contains calibrated 1-second solar X-ray irradiance measurements from four detectors: XRS-A1 and XRS-A2 in the 0.05-0.4 nm band, and XRS-B1 and XRS-B2 in the 0.1-0.8 nm band. The high-sensitivity A1/B1 detectors use single photodiodes; the lower-sensitivity A2/B2 detectors use quadrant photodiodes. Separate corrected quadrant currents, data-quality and invalid-condition flags, observation times, and instrument and spacecraft ancillary measurements are included. NOAA NCEI generates the science-quality L1b product from GOES-R EXIS Level 0 source data using retrospectively improved processing and updated calibrations, and aggregates the original 30-second segments into daily files. This science-quality processing stream is separate from the operational Level 1b product used for real-time space-weather operations. The NetCDF archive can contain missing or flagged samples. NOAA generally recommends the science-quality Level 2 XRS products for scientific analysis.",
        "PublicationInfo": {
          "Title": "GOES-R EXIS XRS L1b Science-Quality Data",
          "Authors": "NOAA National Centers for Environmental Information",
          "PublicationDate": "2018-07-18T00:00:00Z",
          "PublishedBy": "NOAA National Centers for Environmental Information"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Janet.L.Machol",
            "Role": "InstrumentScientist",
            "Note": "NOAA NCEI Instrument Scientist and scientific contact for GOES-R EXIS/XRS."
          },
          {
            "PersonID": "spase://SMWG/Person/NOAA.GOES-R.EXIS",
            "Role": "GeneralContact",
            "Note": "NOAA GOES-R EXIS Team"
          }
        ],
        "InformationURL": [
          {
            "Name": "NOAA NCEI GOES-R EXIS XRS Level 1b Science-Quality Dataset Metadata",
            "URL": "https://data.noaa.gov/metaview/page?view=getDataView&xml=NOAA/NESDIS/NGDC/STP/Space_Weather/iso/xml/exis-l1b-sfxr-sci-goesr.xml",
            "Description": "Official NOAA dataset description, citation, access details and lineage."
          },
          {
            "Name": "NOAA GOES-R EXIS XRS Level 1b Data ReadMe",
            "URL": "https://data.ngdc.noaa.gov/platforms/solar-space-observing-satellites/goes/goes16/l1b/docs/GOES-R_EXIS_XRS_L1b_Data_ReadMe.pdf",
            "Description": "Documentation of GOES-R EXIS/XRS Level 1b science-quality and operational data products."
          }
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/NOAA/NCEI",
        "Availability": "Online",
        "AccessRights": "Open",
        "RightsList": {
          "Rights": {
            "SchemeURI": "https://spdx.org/licenses/",
            "RightsIdentifierScheme": "SPDX",
            "RightsIdentifier": "CC0-1.0",
            "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
            "RightsName": "Creative Commons Zero v1.0 Universal",
            "Note": "NOAA-produced data are publicly available under NOAA's open data policy. Users should cite the NOAA NCEI dataset as specified in the dataset metadata."
          }
        },
        "AccessURL": {
          "Name": "NOAA NCEI GOES-18 EXIS/XRS Science-Quality Level 1b Daily NetCDF Archive",
          "URL": "https://data.ngdc.noaa.gov/platforms/solar-space-observing-satellites/goes/goes18/l1b/exis-l1b-sfxr_science/",
          "Style": "Listing",
          "Description": "Daily aggregated GOES-18 science-quality L1b XRS NetCDF files. Select year and month to obtain individual files."
        },
        "Format": "NetCDF",
        "Encoding": "None"
      },
      "ProviderResourceName": "GOES-R Series Level 1b EXIS X-Ray Sensor (XRS) Science-Quality Products",
      "ProviderProcessingLevel": "Science-Quality Level 1b",
      "InstrumentID": "spase://NOAA/Instrument/GOES/18/EXIS/XRS",
      "MeasurementType": "Irradiance",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2022-06-17T00:00:00Z",
          "RelativeStopDate": "-P1D"
        },
        "Cadence": "PT1S"
      },
      "ObservedRegion": [
        "Sun",
        "Sun.Corona"
      ],
      "Parameter": [
        {
          "Name": "Time",
          "ParameterKey": "time",
          "Description": "Center time of each XRS observation, expressed as seconds since 2000-01-01 12:00:00 UTC, neglecting leap seconds.",
          "Cadence": "PT1S",
          "Units": "s",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "XRS-A1 Irradiance",
          "ParameterKey": "irradiance_xrsa1",
          "Description": "Solar X-ray irradiance measured by the XRS-A1 high-sensitivity single photodiode (solar minimum channel) in the 0.05-0.4 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.",
          "Cadence": "PT1S",
          "Units": "W/m^2",
          "FillValue": "-999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.05",
              "High": "0.4",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-A2 Irradiance",
          "ParameterKey": "irradiance_xrsa2",
          "Description": "Solar X-ray irradiance measured by the XRS-A2 lower-sensitivity quadrant photodiode (solar maximum channel) in the 0.05-0.4 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.",
          "Cadence": "PT1S",
          "Units": "W/m^2",
          "FillValue": "-999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.05",
              "High": "0.4",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-B1 Irradiance",
          "ParameterKey": "irradiance_xrsb1",
          "Description": "Solar X-ray irradiance measured by the XRS-B1 high-sensitivity single photodiode (solar minimum channel) in the 0.1-0.8 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.",
          "Cadence": "PT1S",
          "Units": "W/m^2",
          "FillValue": "-999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.1",
              "High": "0.8",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-B2 Irradiance",
          "ParameterKey": "irradiance_xrsb2",
          "Description": "Solar X-ray irradiance measured by the XRS-B2 lower-sensitivity quadrant photodiode (solar maximum channel) in the 0.1-0.8 nm band. The NetCDF variable is calculated assuming a flat spectrum; the recorded irradiance is a band-integrated energy flux at the spacecraft.",
          "Cadence": "PT1S",
          "Units": "W/m^2",
          "FillValue": "-999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.1",
              "High": "0.8",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-A2 Quadrant 1 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsa_1",
          "Description": "Corrected electric current from quadrant 1 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-A2 Quadrant 2 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsa_2",
          "Description": "Corrected electric current from quadrant 2 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-A2 Quadrant 3 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsa_3",
          "Description": "Corrected electric current from quadrant 3 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-A2 Quadrant 4 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsa_4",
          "Description": "Corrected electric current from quadrant 4 of the XRS-A2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-B2 Quadrant 1 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsb_1",
          "Description": "Corrected electric current from quadrant 1 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-B2 Quadrant 2 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsb_2",
          "Description": "Corrected electric current from quadrant 2 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-B2 Quadrant 3 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsb_3",
          "Description": "Corrected electric current from quadrant 3 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-B2 Quadrant 4 Corrected Photodiode Current",
          "ParameterKey": "corrected_current_xrsb_4",
          "Description": "Corrected electric current from quadrant 4 of the XRS-B2 (solar maximum) quadrant photodiode. Four separately recorded quadrant currents provide information relevant to X-ray flare localization and photodiode response.",
          "Cadence": "PT1S",
          "Units": "A",
          "FillValue": "-999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS L1b Data Quality Flags",
          "ParameterKey": "quality_flags",
          "Description": "Bit-field describing Level 1b processing status and data-quality conditions including pointing, calibration, detector and telemetry anomalies. Interpret individual bits using the NetCDF flag_values, flag_masks and flag_meanings attributes.",
          "Cadence": "PT1S",
          "FillValue": "4294967295",
          "Support": {
            "SupportQuantity": "DataQuality"
          }
        },
        {
          "Name": "XRS L1b Invalid Condition Flags",
          "ParameterKey": "invalid_flags",
          "Description": "Flag field describing potentially invalid measurements, such as detector integration-time changes, stimulus-lamp state changes and EDAC events. Interpret codes using the NetCDF flag_values and flag_meanings attributes.",
          "Cadence": "PT1S",
          "FillValue": "255",
          "Support": {
            "SupportQuantity": "DataQuality"
          }
        }
      ]
    }
  }
}