2.7.2 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NOAA/NumericalData/GOES/19/EXIS/XRS/Operational/L1B/PT1S NOAA NumericalData GOES-19 EXIS/XRS Operational Level 1b X-ray Irradiance EXIS XRS L1b Solar Flux: X-Ray 2026-10-19T00:08:46Z 2026-10-19T00:08:46Z Initial metadata creation. SY GOES-19 Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) X-Ray Sensor (XRS) operational 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 aggregates the original 30-second operational L1b segments into daily files. This is the operational processing stream; retrospectively reprocessed science-quality data are distributed separately. NOAA recommends the science-quality Level 2 XRS data for scientific analysis because they incorporate updated calibrations and retrospective corrections. The NetCDF archive can contain missing or flagged samples. NOAA National Centers for Environmental Information 2018-07-18T00:00:00Z NOAA National Centers for Environmental Information spase://SMWG/Person/Janet.L.Machol InstrumentScientist NOAA NCEI Instrument Scientist and scientific contact for GOES-R EXIS/XRS. spase://SMWG/Person/NOAA.GOES-R.EXIS GeneralContact NOAA GOES-R EXIS Team NOAA NCEI GOES-R EXIS XRS Level 1b Dataset Metadata https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncei.swx%3Aexis-l1b-sfxr-goesr Official NOAA dataset description, citation, access details and lineage. NOAA GOES-R EXIS XRS Level 1b Operational ReadMe https://data.ngdc.noaa.gov/platforms/solar-space-observing-satellites/goes/goes16/l1b/docs/GOES-R_EXIS_XRS_L1b_Data_ReadMe.pdf Documentation for GOES-R EXIS/XRS Operational Level 1b data products. spase://SMWG/Repository/NOAA/NCEI Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal 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. NOAA NCEI GOES-19 EXIS/XRS Operational Level 1b Daily NetCDF Archive https://data.ngdc.noaa.gov/platforms/solar-space-observing-satellites/goes/goes19/l1b/exis-l1b-sfxr/ Daily aggregated GOES-19 operational L1b XRS NetCDF files. Select year and month to obtain individual files. NetCDF None GOES-R Series Level 1b EXIS X-Ray Sensor (XRS) Product in Daily Aggregations Operational Level 1b spase://NOAA/Instrument/GOES/19/EXIS/XRS Irradiance 2025-01-31T00:00:00Z -P1D PT1S Sun Sun.Corona Time time Center time of each XRS observation, expressed as seconds since 2000-01-01 12:00:00 UTC, neglecting leap seconds. PT1S s Temporal XRS-A1 Irradiance irradiance_xrsa1 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. PT1S W/m^2 -999 Photon EnergyFlux 0.05 0.4 nm XRS-A2 Irradiance irradiance_xrsa2 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. PT1S W/m^2 -999 Photon EnergyFlux 0.05 0.4 nm XRS-B1 Irradiance irradiance_xrsb1 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. PT1S W/m^2 -999 Photon EnergyFlux 0.1 0.8 nm XRS-B2 Irradiance irradiance_xrsb2 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. PT1S W/m^2 -999 Photon EnergyFlux 0.1 0.8 nm XRS-A2 Quadrant 1 Corrected Photodiode Current corrected_current_xrsa_1 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. PT1S A -999 Other XRS-A2 Quadrant 2 Corrected Photodiode Current corrected_current_xrsa_2 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. PT1S A -999 Other XRS-A2 Quadrant 3 Corrected Photodiode Current corrected_current_xrsa_3 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. PT1S A -999 Other XRS-A2 Quadrant 4 Corrected Photodiode Current corrected_current_xrsa_4 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. PT1S A -999 Other XRS-B2 Quadrant 1 Corrected Photodiode Current corrected_current_xrsb_1 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. PT1S A -999 Other XRS-B2 Quadrant 2 Corrected Photodiode Current corrected_current_xrsb_2 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. PT1S A -999 Other XRS-B2 Quadrant 3 Corrected Photodiode Current corrected_current_xrsb_3 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. PT1S A -999 Other XRS-B2 Quadrant 4 Corrected Photodiode Current corrected_current_xrsb_4 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. PT1S A -999 Other XRS L1b Data Quality Flags quality_flags 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. PT1S 4294967295 DataQuality XRS L1b Invalid Condition Flags invalid_flags 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. PT1S 255 DataQuality