urn:nasa:pds:nh_pepssi:launch_cal 1.0 1.19.0.0 Product_Collection McNutt, R. Jr. Sharkey, Benjamin; Gicquel, Adeline; Gobat, Caden; Peterson, Joseph 2026 10.26007/dg1s-n084 This data set contains Calibrated data taken by the New Horizons Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) instrument during the POST-LAUNCH CHECKOUT mission phase. These data were migrated from the PDS3 dataset: NH-X-PEPSSI-3-LAUNCH-V1.1. PEPSSI is a particle telescope and a time-of-flight (TOF) spectrometer that measures ions and electrons over a broad range of energies and angles. Particle composition and energy spectra are measured for H to Fe from ~ 30 keV to ~1 MeV (but not all species are uniquely separated) and for electrons from ~30 keV to 700 keV. PEPSSI comprises a time-of-flight (TOF) section and a solid-state detector (SSD) array that measures particle energy. The combination of measured energy and TOF provides unique particle identification by mass and particle energy depending on the range: for protons from ~30 keV to ~1 MeV; for heavy (CNO) ions from ~80 keV to ~1 MeV. Lower-energy (>3 keV) ion fluxes are measured by TOF only, but without the SSD signal, providing velocity spectra at these energies as well. Due to storage and bandwidth limitations, all event data cannot be stored or telemetered to the ground. Instead, a round-robin algorithm is used to save Energy, TOF, and timing data for select events. The common data products contain these event and summary measurements, accumulated over fixed periods of 86,400 seconds, with each period in a single file comprising multiple binary tables. During the Post-Launch phase of the mission, the PEPSSI measurements concentrated on initial commissioning of the instrument. The first PEPSSI commissioning activity was running the full CPT on PEPSSI to confirm all instrument functionality after launch. Then commands were sent to open the door, ramp up bias voltage and HV and confirm full functionality. The remainder of commissioning activities included calibrating the instrument thresholds, determining HV settings, loading classification tables and initialization macros, and investigating and confirming the instrument pointing. There were a few days of data collection in which protons and helium are clearly identified. This phase includes periods in which the instrument is in normal science mode and diagnostic mode. The data taken during this period are not intended for scientific study. Labels were redesigned during migration using the .FIT header and PDS3 .LBL files, but the data files are unchanged from their PDS3 version. 2025-11-04 1.0 Created during PDS4 migration by PDS-SBN (B. Sharkey) 2006-01-19T00:00:00Z 2007-01-01T00:00:00Z Science Calibrated Particles Ions Energetic New Horizons Mission urn:nasa:pds:context:investigation:mission.new_horizons collection_to_investigation New Horizons Host urn:nasa:pds:context:instrument_host:spacecraft.nh is_instrument_host Pluto Energetic Particle Spectrometer Science Investigation Instrument urn:nasa:pds:context:instrument:nh.pepssi is_instrument Solar Wind Plasma Stream urn:nasa:pds:context:target:plasma_stream.solar_wind data_to_target urn:nasa:pds:context:resource:resource.nh_pepssi_colxn_launch_cal_online has_resource urn:nasa:pds:nh_pepssi:launch_cal:overview::1.0 collection_to_document PEPSSI Launch Overview Document urn:nasa:pds:nh_documents:pepssi collection_to_document PEPSSI Document Collection urn:nasa:pds:nh_documents:mission collection_to_document New Horizon Mission Document Collection urn:nasa:pds:nh_pepssi:launch_raw::1.0 collection_to_data PEPSSI Launch Raw Data Collection Version 1.0 urn:nasa:pds:nh_pepssi:calibration_files::2.0 collection_to_calibration PEPSSI Calibration Files Collection Version 2.0 Data collection_launch_cal.csv 0 PDS DSV 1 34 Carriage-Return Line-Feed Comma 2 0 Member Status 1 ASCII_String 1 LIDVID_LID 2 ASCII_LIDVID_LID 255 inventory_has_member_product