KEM Encounter Data Review and Analysis

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Explore the KEM Encounter Data from August 2018 to April 2022, including SDC instrument details, raw and calibrated data analysis, and dataset completeness. Discover insights from the scientific data collected during the mission.

  • Data Analysis
  • Scientific Research
  • Encounter Data
  • Space Exploration
  • Scientific Findings

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  1. SDC PDS Review KEM Encounter Data: 2018-08-14 to 2022-04-09 A.R. Poppe U.C. Berkeley October 17, 2022 1

  2. SDC Instrument SDC instrument: - 14 detectors: 12 science (with 1 defunct), 2 reference - electronics box for signal processing, telemetry/commands 2

  3. Current Release Current dataset: KEM Encounter + Cruise Aug 2018 to Apr 2022 3

  4. KEM Encounter: SDC Raw Data Includes SDC raw scientific data, SDC housekeeping (engineering telemetry), New Horizons spacecraft housekeeping (0x004, 0x00D, 0x00A), and New Horizons thruster firing fata The SDC raw scientific data includes channel (detector) number, data threshold, data magnitude, and time stamp 4

  5. KEM Encounter: SDC Raw Data Channel ID# versus Time looks good Very few hits leading up to Jan 1 encounter as expected from high thresholds Continued periodic cruise measurements with ACO breaks in counts (Apr-Jul 2020) Total number of events: 62,010 Time period covers: Aug 15, 2018 April 9, 2022 5

  6. KEM Encounter: SDC Raw Data Magnitude versus Time looks good Very few hits leading up to Jan 1 encounter as expected from high thresholds Continued periodic cruise measurements with ACO breaks in counts (e.g., Apr-Jul 2020) Total number of events: 62,010 Time period covers: Aug 15, 2018 April 9, 2022 6

  7. KEM Encounter: SDC Calibrated Data Includes SDC calibrated scientific data The SDC calibrated scientific data includes time, channel, charge, mass, mass threshold, error bars, quality flag, and theoretical SDC-dust relative impact velocity 7

  8. KEM Encounter: SDC Calibrated Data 8

  9. Completeness: The delivered dataset has a complete set of files and documentation Adequate completeness of each data record (i.e., one dust hit) Intelligibility: Documentation is adequate and straightforward SDC data are intelligibly formatted through FITS files, both raw and calibrated Metadata are straightforward through ASCII implementation Interpretability: Given the relatively simple nature of SDC operations, the data are straightforwardly interpretable; no issues noted here 9

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