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Dataset Overview | National Centers for Environmental Information (NCEI)

GOES-R Series Level 1b EXIS X-Ray Sensor (XRS) Product in Daily Aggregations

GOES-R EXIS XRS L1b

browse graphicNOAA GOES Spacecraft
The EUV and X-Ray Irradiance Sensors (EXIS) measures solar irradiance at the very short wavelengths where the Sun's output varies the most. The GOES-R Extreme Ultraviolet and X-Ray Irradiance Sensors (EXIS) X-Ray Sensor (XRS) Level 1b (L1b) Science-Quality data contains 1-second cadence soft X-Ray irradiance measurements covering 0.05-0.4 nm and 0.1-0.8 nm integrated passbands. EXIS was designed and built by the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado Boulder. This science-quality dataset is produced by NOAA’s National Centers for Environmental Information (NCEI) and utilizes code provided by LASP, and differs from the L1b operational product used at the NOAA Space Weather Prediction Center (SWPC) in that it incorporates retrospective fixes for issues in the operational product and uses the most recent calibrations.
  • Cite this dataset when used as a source: GOES-R EXIS XRS L1b Data in Daily Aggregations. NOAA National Centers for Environmental Information.
  • gov.noaa.ncei.swx:exis-l1b-sfxr-goesr
gov.noaa.ncei.swx:exis-l1b-sfxr-goesr
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Distribution Formats
  • NetCDF-4
Distributor NOAA National Centers for Environmental Information
goesr.spaceweatherdata@noaa.gov
Dataset distributor Janet Machol
Instrument Scientist
NOAA National Centers for Environmental Information
goesr.exis@noaa.gov
Coverage Description non-geographic dataset
Time Period 2017-12-08 to Present
Spatial Bounding Box Coordinates Bounding coordinates not available
Dataset Information
Processing Documents
  • OR_EXIS-L1b-ALG-SFXR_<Version>.zip (planned publication in August 2018)
    Associated Resources
    Publication Dates
    • publication: 2018-07-18
    Edition 1.0.0
    Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
    Dataset Progress Status Planned - fixed date has been established upon or by which the data will be created or updated
    Data Update Frequency Daily
    Supplemental Information
    NESDIS produces GOES-R EXIS XRS Level 1b products from GOES-R EXIS Level 0 source files. These output files span 30 seconds of one-second observations. NOAA's National Centers for Environmental Information (NCEI) then takes the 30-second files and aggregates them to produce daily EXIS XRS L1b products. These daily files are intended to be more convenient for users than the original 30-second files.
    Purpose The GOES-R X-Ray Sensor (XRS) monitors solar flares and helps predict solar proton events that can penetrate Earth’s magnetic field. The XRS is important in monitoring X-ray input into the Earth's upper atmosphere and alerts scientists to X-ray flares that are strong enough to cause radio blackouts and aides in space weather predictions. This is different from the SUVI instrument which takes extreme ultraviolet images of the sun to monitor features on the sun as well as flares and coronal mass ejections. EXIS provides more information on solar flares and includes a more complete and detailed report of solar variability than what is available from the previous generation of GOES.
    Dataset Citation
    • Cite this dataset when used as a source: GOES-R EXIS XRS L1b Data in Daily Aggregations. NOAA National Centers for Environmental Information.
    Cited Authors
    • NOAA National Centers for Environmental Information
    Publishers
    • NOAA National Centers for Environmental Information
    Theme keywords NASA Global Change Master Directory (GCMD) Science and Services Keywords
    • EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR X-RAY EMISSIONS
    Platform keywords NASA Global Change Master Directory (GCMD) Platform Keywords
    • Solar/Space Observation Satellites > GOES (Geostationary Operational Environmental Satellite)
    Instrument keywords NASA Global Change Master Directory (GCMD) Instrument Keywords
    • Solar/Space Observing Instruments > X-Ray/Gamma Ray Detectors > > > EXIS-XRS-GOESR
    Place keywords NASA Global Change Master Directory (GCMD) Location Keywords
    • SPACE > EARTH MAGNETIC FIELD > MAGNETOSPHERE (OTHER)
    Project keywords NASA Global Change Master Directory (GCMD) Project Keywords
    • GOES > Geostationary Operational Environmental Satellites
    • NOAA OneStop Project
    Data Resolution keywords NASA Global Change Master Directory (GCMD) Data Resolution Keywords
    • Temporal Resolution Range: 1 second - < 1 minute
    Stratum keywords NASA Global Change Master Directory (GCMD) Location Keywords
    • SPACE > EARTH MAGNETIC FIELD > MAGNETOSPHERE (OTHER)
    Use Constraints
    • Cite this dataset when used as a source: GOES-R EXIS XRS L1b Data in Daily Aggregations. NOAA National Centers for Environmental Information.
    • NCEI cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NCEI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
    Fees
    • Electronic downloads of the data are free.
    Lineage information for: dataset
    Lineage Statement This dataset was produced by NESDIS, and is archived at the NOAA National Centers for Environmental Information (NCEI).
    Processor
    • WCDAS (Wallops Command and Data Acquisition Station, Chincoteague, VA)
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Processing Steps
    • The EXIS XRS L1b Calibration Algorithm produces the X-Ray irradiance fluxes.
    • Aggregation of EXIS XRS 30-second files into daily aggregated files.
      Rationale: User convenience
    Processing Documents
      • OR_EXIS-L1b-ALG-SFXR_<Version>.zip (planned publication in August 2018)
      Source Datasets
      • GOES-R EXIS Level 0 data
        • Description of Source: GOES-R EXIS Level 0 data
        • Temporal extent used: 2018-07-18 to Present
      • EXIS XRS Level 1b data
        • EXIS XRS Level 1b data
          Web site to extract 30-second EXIS XRS files from CLASS
        • Description of Source: EXIS XRS Level 1b data (30-second files)
        • Temporal extent used: 2017-12-08 to Present
      Last Modified: 2022-09-27T04:02:32
      For questions about the information on this page, please email: goesr.spaceweatherdata@noaa.gov