Ulysses Cosmic Ray and Solar Particle Investigation (COSPIN) High Energy Telescope (HET) F

Ulysses spacecraft's High Energy Telescope recorded instantaneous housekeeping parameters like voltages and temperatures every 256 seconds to monitor instrument health. Data files are listed readout-by-readout with timestamps in fractional year, day of year, and milliseconds of day. The National Aeronautics and Space Administration provides these raw, unprocessed measurements with no noise removal or averaging applied.

Use Cases

• Monitor long-term instrument health trends based on voltage and temperature parameters.
• Correlate spacecraft operational anomalies with environmental conditions based on high-resolution telemetry.
• Study the thermal and electrical behavior of spaceborne detectors based on instantaneous readouts.
• Develop models for instrument calibration and stability based on raw housekeeping data.

Strengths

• Data provides high-resolution timestamps to 12 decimal places in fractional year format.
• Measurements are instantaneous, not averaged, capturing precise instrument states.
• Files follow a consistent naming convention (uly_het_full_house_YYYDDD.txt) for daily data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data contains no noise removal; isolated large parameter changes require cautious interpretation.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Readout-by-readout listings from the Ulysses spacecraft's COSPIN High Energy Telescope.

Time Range

Data files indicate years since 1900 (e.g., 090 for 1990, 102 for 2002), suggesting a multi-year mission coverage.

Freshness

Last updated 2026-03-13 09:31:24.013638; freshness should be verified.

Geography

Space-based, from the heliocentric orbit of the Ulysses spacecraft.