The Space Environment In-Situ Suite (SEISS) Instrument Engineering Telemetry Data file contains data used to monitor and evaluate the health and performance of the sensor suite. This data is transmitted to the ground in raw digital counts, and subsequently converted into physical units by the ground system. All the data pertains to the temperature of components in the sensor suite. Primarily, this includes temperatures for the telescopes and other sensing components. The SEISS Calibration Data file contains data used to support the generation of EHIS, MPS-LO, MPS-HI, and SGPS Level 1b products, and monitor and evaluate the health and performance of the sensor suite. This file contains derived level 1b calibration parameters including raw sensor count rates, valid raw sensor count data percentages, and dead-time and contamination correction factors needed for the production of all the SEISS products.

The Solar Ultraviolet Imager (SUVI) Instrument Engineering Telemetry Data file contains data used to support the generation of SUVI Level 1b products, and monitor and evaluate the health and performance of the instrument. This data is transmitted to the ground in raw digital counts, and subsequently converted into physical units by the ground system. Most of the data pertains to the temperature of components in the instrument. This includes temperatures for the guide telescope, door mechanism, supporting structure, shutter, aperture, filter wheels, mirrors, electronics, and CCD. CCD bias voltages are also included. The SUVI Dark Frame Data file contains an image produced by the SUVI with the camera’s shutter closed. A dark frame measures the inherent bias and noise in the camera electronics, and is used to identify, track, and monitor permanently bad pixels. Dark frames are collected in the operational imaging epoch of the SUVI, and support the radiometric correction of the solar imagery products. Up to ten dark frames are used to support of radiometrically correcting individual solar images. The SUVI Miscellaneous Frame Data file contains a special image produced by the SUVI to support several calibration related activities. Specific types of images include glass, flat-field, and light transfer curve.

The Solar Ultraviolet Imager (SUVI) Instrument Engineering Telemetry Data file contains data used to support the generation of SUVI Level 1b products, and monitor and evaluate the health and performance of the instrument. This data is transmitted to the ground in raw digital counts, and subsequently converted into physical units by the ground system. Most of the data pertains to the temperature of components in the instrument. This includes temperatures for the guide telescope, door mechanism, supporting structure, shutter, aperture, filter wheels, mirrors, electronics, and CCD. CCD bias voltages are also included. The SUVI Dark Frame Data file contains an image produced by the SUVI with the camera’s shutter closed. A dark frame measures the inherent bias and noise in the camera electronics, and is used to identify, track, and monitor permanently bad pixels. Dark frames are collected in the operational imaging epoch of the SUVI, and support the radiometric correction of the solar imagery products. Up to ten dark frames are used to support of radiometrically correcting individual solar images. The SUVI Miscellaneous Frame Data file contains a special image produced by the SUVI to support several calibration related activities. Specific types of images include glass, flat-field, and light transfer curve.

The EUV and X-Ray Irradiance Sensors (EXIS) measures solar irradiance at the very short wavelengths where the Sun's output varies the most. EXIS has two primary components, the X-Ray Sensor (XRS) and the Extreme Ultraviolet Sensor (EUVS). EXIS Level 2 data are used by NOAA’s Space Weather Prediction Center to produce warnings for radio blackouts when large flares occur. EXIS extreme ultraviolet data is used in models to help determine upper atmospheric densities which impact satellite orbits. EXIS Level 2 data products include measurements of irradiances in two X-ray bands, seven lines at extreme and far ultraviolet wavelengths, and the Magnesium II index, The EXIS products are at multiple cadences including high resolution data of 1 to several seconds as well as 1-minute and daily averages. Other products include flare summaries, flare locations and extreme ultraviolet spectra generated by a proxy model. Data are in NetCDF-4 format.

GOES Satellite Data - Block 11 (GVAR_B11) - GVAR is the data transmission format used to broadcast environmental data measured by the independent GOES Imager and Sounder instruments. The Block 11 data files contain ancillary instrument data and metadata that may be useful to expert users. All sounder data will be included in Block 11, but not all Block 11's will contain sounder data. As the GVAR data are received by NOAA, the sounder blocks are stripped out and converted into McIDAS AREA format for final archive.

This data collection consists of archived Geostationary Operational Environmental Satellite-R (GOES-R) Series Advanced Baseline Imager (ABI) Level 0 data from the GOES-East and GOES-West satellites in the operational (OPS) and the post-launch test (PLT) phases. The GOES-R Series provides continuity of the GOES mission through 2035 and improvements in geostationary satellite observational data. GOES-16, the first GOES-R satellite, began operating as GOES-East on December 18, 2017. GOES-17 began operating as GOES-West on February 12, 2019. GOES-T launched on March 1, 2022, and was renamed to GOES-18 on March 14, 2022. GOES-U, the final satellite in the series, is scheduled to launch in 2024. ABI is a multi-channel passive imaging radiometer observing the Western Hemisphere. The ABI Level 0 data are composed of Consultative Committee for Space Data Systems (CCSDS) packets containing the science, housekeeping, engineering, and diagnostic telemetry data downlinked from the instrument. The Level 0 data files also contain orbit and attitude/angular rate packets generated by the GOES spacecraft. Each CCSDS packet contains a unique Application Process Identifier (APID) in the primary header that identifies the specific type of packet, and is used to support interpretation of its contents. Users may refer to the GOES-R Series Product Definition and Users’ Guide (PUG) Volume 1 (Main) and Volume 2 (Level 0 Products) for Level 0 data documentation. Related instrument calibration data and Level 1b processing information are archived and available for order at the NOAA CLASS website. The ABI Level 0 data files are delivered in a netCDF-4 file format, however, the constituent CCSDS packets are stored in a byte array making the data opaque for standard netCDF reader applications. The ABI Level 0 data files are packaged in hourly tar files (data bundles) by satellite for the archive. Recently ingested archive tar files are available for 14 days on an anonymous FTP server for users to download. Data archived on offline tape may be requested from NCEI.

GOES Satellite Data - Block 11 (GVAR_B11) - GVAR is the data transmission format used to broadcast environmental data measured by the independent GOES Imager and Sounder instruments. The Block 11 data files contain ancillary instrument data and metadata that may be useful to expert users. All sounder data will be included in Block 11, but not all Block 11's will contain sounder data. As the GVAR data are received by NOAA, the sounder blocks are stripped out and converted into McIDAS AREA format for final archive.

The ABI Instrument Engineering Telemetry Data file contains data used to support the generation of ABI Level 1b products, and monitor and evaluate the health and performance of the instrument. This data is transmitted to the ground in raw digital counts, and subsequently converted into physical units by the ground system. Most of the data pertains to the temperature of components in the instrument. This includes the ABI Infrared Calibration Target (ICT), the North-South and East-West scan mirrors, the three focal plane modules (i.e., VNIR, MWIR, LWIR), and the ABI optical bench. Temperatures are expressed in units of kelvin. The only exception to this is the data for the twelve platinum resistance thermometers (PRTs) associated with the ICT. These data PRT data are expressed in counts. Table C.1, ABI Instrument Engineering Telemetry in Appendix C identifies each telemetry parameter. Elements of the instrument telemetry support the generation of the ABI Level 1b Radiances product data. The North-South scan mirror, the East-West scan mirror, and the PRT counts contribute to the computation of gain coefficients for detectors in the ABI emissive channels during observations of the ICT and the Space Look. Additionally, the scan mirror temperatures are used in support of determining the Earth scene radiances for the emissive bands. The ABI Instrument Calibration Data files contain data resulting from the observation of the ABI Space Look, Infrared Calibration Target (ICT) (i.e., blackbody), Star Look Target, and Solar Calibration Target (SCT) (i.e., solar look target). These observations are dependent on the ABI band and the individual detectors. The ABI Lunar Scan Data file contains an off-earth mesoscale scene, and is collected as part of an ABI mode 3 or mode 6 timeline when the moon is in the field of regard of the ABI instrument. The apparent size of the moon in the field of regard of the ABI subtends a size suitable for coverage using the ABI mesoscale scene type, which consists of two swaths. This data is collected for all ABI bands. Lunar scan data samples are radiometrically calibrated. The moon is observed in support of off-line ABI calibration activities.

The EXIS Instrument Engineering Telemetry Data file contains data used to support the generation of EUVS and XRS Level 1b products, and monitor and evaluate the health and performance of the sensor suite. This data is transmitted to the ground in raw digital counts, and subsequently converted into physical units by the ground system. Some of the data pertains to the temperature of components in the sensor suite. This includes temperatures for the power board, interface board, operational heater, entrance slit, detectors, detector boards, microprocessor board, EUVS-C analog to digital converter, and XRS ASICs and other sub-assemblies. Other telemetry includes XRS-A and XRS-B solar minimum and maximum dark current and field of view corrections, and gains. Temperatures are expressed in units of kelvin, and the other telemetry items are in units of counts, counts per digital number, or have no units of measure. A netCDF-4 file containing this EXIS engineering telemetry is generated hourly. Telemetry parameter values are included at one second intervals, and summary statistics, including minimum, maximum, mean and standard deviation, are produced for the one hour period.

The Magnetometer Instrument Engineering Telemetry Data file contains data used to support the generation of the Magnetometer Level 1b product, and monitor and evaluate the health and performance of the two magnetometers. This data is transmitted to the ground in raw digital counts, and subsequently converted into physical units by the ground system. Some of the data pertains to the temperature of components of the magnetometers. This includes temperatures for the electronics and sensors. Other telemetry includes reference voltages and temperature dependent scale factors and offsets relating raw observed counts to magnetic field units (nanoteslas) for the two magnetometers. The Magnetometer Calibration Data file contains raw observation counts and data acquisition status from the inboard and outbound magnetometers for a one second interval during a calibration maneuver. Nominally, this file contains ten observation samples acquired at one-tenth of a second intervals.