<_Note>Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness. 2.6.1 <_MasterURL>https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/ts1_l2_aci_ipd_00000000_v01.json (from all.xml) <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json TRACERS Satellite 1 Analyzer for Cusp Ions Level l2> IPD <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description ts1_l2_aci_ipd <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source https://doi.org/10.1007/s11214-025-01154-w - The Analyzers for Cusp Ions (ACIs) on the TRACERS mission measure ion velocity distribution functions in the magnetospheric cusp from two closely spaced spacecraft in low Earth orbit. The precipitating and upflowing ion measurements contribute to the overarching goal of the TRACERS mission. ACI is a toroidal top-hat electrostatic analyzer on a spinning platform that provides full angular coverage with instantaneous 22.5 degrees x approximately 6 degrees angular resolution for a single energy step. ACI has an ion energy range from approximately 8 eV/e to 20,000 eV/e covered in 47 logarithmic-spaced energy steps with fractional energy resolution of approximately 10%. It provides reasonably high cadence (312 ms) measurements of the ion energy-pitch angle distribution with good sensitivity and energy resolution, enabling detection of cusp boundaries and characterization of cusp ion steps. <_Description>Source: Master/CDFglobalAttributes/TEXT Confer with PI for rules of acknowledgement <_Acknowledgement>Source: Master/CDFglobalAttributes/Acknowledgement <_Rights> SPDX Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html https://spdx.org/licenses/ https://tracers.space.swri.edu Level l2 IPD Level l2 IPD <_Note>URL also in all.xml. Using master. PI determined <_Caveats>Source: Master/CDFglobalAttributes/Rules_of_use <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 2025-10-02T20:26:00Z 2025-12-31T23:15:51Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop PT0.312048S <_Cadence>Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/tracers/tracers1/aci_cusp-ions/l2/ipd_ion-dist/2025/ts1_l2_aci_ipd_20251002_v1.0.0.cdf. The most common cadence, 312048000 [ns] = PT0.312048S, occurred for 9.9974% of the 380 timesteps. <_ObservedRegion>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json <_ProcessingLevel>Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/tracers/tracers1/aci_cusp-ions/l2/ipd_ion-dist In CDF via HTTP from CDAWeb ts1_l2_aci_ipd_%Y%m%d_%Q.cdf %Y TS1_L2_ACI_IPD CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/tracers/tracers1/aci_cusp-ions/l2/ipd_ion-dist In CDF via HTTP from CDAWeb ts1_l2_aci_ipd_%Y%m%d_%Q.cdf %Y TS1_L2_ACI_IPD CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute CDAWeb Web Service https://cdaweb.gsfc.nasa.gov/WebServices/ Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made. TS1_L2_ACI_IPD CDF CSV GIF NetCDF PNG PS PDF XML x_Script.IDL x_Script.Python Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=TS1_L2_ACI_IPD TS1_L2_ACI_IPD Web service user interface for this product. CDF GIF PDF Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/TS1_L2_ACI_IPD/clientLibraryExample/ TS1_L2_ACI_IPD Web service that generates a Python script to access this product. x_Script.IDL x_Script.Python spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/SSCWeb. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=TS1_L2_ACI_IPD TS1_L2_ACI_IPD Web Service to this product. HTML spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=TS1_L2_ACI_IPD TS1_L2_ACI_IPD Web Service to this product using the HAPI interface. CSV JSON Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=TS1_L2_ACI_IPD&return=script TS1_L2_ACI_IPD Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API. x_Script.IDL x_Script.Javascript x_Script.MATLAB x_Script.Python x_Script.Autoplot x_Script.curl x_Script.wget spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: S. Fuselier at Southwest Research Institute HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=TS1_L2_ACI_IPD&format=gallery TS1_L2_ACI_IPD Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellite 1 (from all.xml/observatory/description/@short) Analyzer for Cusp Ions (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Magnetospheric Science (from Master/CDFglobalAttributes/Discipline) TRACERS1 (from Master/CDFglobalAttributes/Source_name) Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellite 1 (from Master/CDFglobalAttributes/Source_name) l2_aci (from Master/CDFglobalAttributes/Data_type) ACI (from all.xml/instrument/@ID) Sweep start in UTC Epoch CATDESC: 'Timestamp of 2nd energy sweep, 6.5 ms after 1st'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' ns Scalar Temporal ACI Counts: Sorted ts1_l2_aci_tscs_def_sorted_counts Master CDF CATDESC: 'Counts at 47 energies over 16 look directions: Sorted'. Master CDF VAR_NOTES: 'ACI counts as a function of epoch, energy (47 bins) and look angle (16 directions): Sorted'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts -1e+31 47 16 ACI Differential Energy Flux ts1_l2_aci_tscs_def Master CDF CATDESC: 'Differential energy flux at 47 energies over 16 look directions'. Master CDF VAR_NOTES: 'ACI differential energy flux as a function of epoch, energy (47 bins) and look angle (16 directions)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' eV cm^-2 s^-1 sr^-1 eV^-1 -1e+31 47 16 ACI Differential Energy Flux Errors ts1_l2_aci_tscs_def_errors Master CDF CATDESC: 'Errors in differential energy flux'. Master CDF VAR_NOTES: 'Errors in ACI differential energy flux as a function of epoch, energy (47 bins) and look angle (16 directions)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' eV cm^-2 s^-1 sr^-1 eV^-1 -1e+31 47 16 ACI DEF Pitch Angle Sorted ts1_l2_aci_tscs_pitch_angle Master CDF CATDESC: 'Differential Energy Flux Ordered by Pitch Angle'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' eV cm^-2 s^-1 sr^-1 eV^-1 -1e+31 47 16 ACI Anode Look Directions Theta Angle in GEI2000 ts1_l2_aci_gei2000_look_direction_theta Master CDF CATDESC: 'ACI anode look directions theta angle in GEI2000 frame'. Master CDF VAR_NOTES: 'Spherical polar theta angle (polar angle) of the look directions of each ACI anode in the GEI2000 frame.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' degrees -1e+31 16 ACI Anode Look Directions Phi Angle in GEI2000 ts1_l2_aci_gei2000_look_direction_phi Master CDF CATDESC: 'ACI anode look directions phi angle in GEI2000 frame'. Master CDF VAR_NOTES: 'Spherical polar phi angle (azimuthal angle) of the look directions of each ACI anode in the GEI2000 frame.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' degrees -1e+31 16 TSCS to GEI2000 quaternion ts1_l2_aci_quat_tscs_to_gei2000 Master CDF CATDESC: 'Quaternion that transforms TSCS to GEI2000 frame'. Master CDF VAR_NOTES: 'Quaternion that transforms from TSCS to GEI2000 frame. Quaternions are in the Shuster format, with the scalar component in the 4th element.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1e+31 4