<_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/twins2_hk_1sec_00000000_v01.json (from all.xml) <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json TWINS Spacecraft 2 - housekeeping <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description twins2_hk_1sec <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source TWINS (Two Wide-angle Imaging Neutral-atom Spectrometers) is a Mission of Opportunity under NASA's Small Explorer (SMEX) program. TWINS-1 and TWINS-2 are the designations for NASA-sponsored instruments flying on unspecified non-NASA U.S. government spacecraft.The TWINS-1 instrument high voltages were turned on in April 2007 and the TWINS-2 high voltages in May 2008; the exact launchdates are not available. The data (including both science data and spacecraft ephemeris/attitude information) from the two NASA-funded science instruments are publicly available to the scientific research community. See http://twins.swri.edu/TWINS is a stereo mission whose overall scientific objective is to establish the global connectivities and causal relationships between processes in different regions of the Earth.s magnetosphere. To meet this goal, TWINS-1 and TWINS-2 provide stereoscopic neutral atom imaging of the magnetosphere from two widely spaced, high-altitude, high-inclination spacecraft. TWINS instrumentation includes an energetic neutral atom (ENA) imager to capture charge-exchange-produced neutral atoms over a broad energy range (approximately 1-100 keV) and a Lyman-alpha detector to measure the density of the neutral hydrogen geocorona needed for extraction of magnetospheric ion fluxes from neutral atom data.The TWINS-1 and TWINS-2 instruments are identical. Each spacecraft carrying TWINS instruments is in a Molniya orbit (63.4 deg, 7.2 Re apogee, 1000 km perigee; period 12 h), and is three-axis stabilized and approximately nadir-pointing. Each acquires image data with time resolution of 60 s. The time required to change actuator direction between scans (no data collection) was 25 seconds from June 2008 to July 2009, and 12 seconds at all other times. This gives an effective cadence of 72 or 85 seconds. The nominal design lifetime for each instrument is four years. TWINS operates only during the apogee portion of each orbit, when the spacecraft is above the radiation belts.More detailed information is available at the TWINS home page http://twins.swri.edu/ <_Description>Source: Master/CDFglobalAttributes/TEXT <_Rights> SPDX Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html https://spdx.org/licenses/ https://cdaweb.gsfc.nasa.gov/TWINS_info.html list of events and sample plots. Initial CDAWeb TWINS <_Note>URL also in all.xml. Using master. https://science.nasa.gov/mission/twins the TWINS Southwest Research Institute web site Release notes and other information available at <_Note>URL also in all.xml. Using master. <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 2008-04-11T07:28:15Z 2017-08-23T23:59:58Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop PT1.333S <_Cadence>Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/twins/twins2/housekeeping_cdf/2008/twins2_hk_1sec_20080411_v01.cdf. The most common cadence, 1333 [ms] = PT1.333S, occurred for 97.2118% of the 35877 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: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/twins/twins2/housekeeping_cdf In CDF via HTTP from CDAWeb twins2_hk_1sec_%Y%m%d_%Q.cdf %Y TWINS2_HK_1SEC CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/twins/twins2/housekeeping_cdf In CDF via HTTP from CDAWeb twins2_hk_1sec_%Y%m%d_%Q.cdf %Y TWINS2_HK_1SEC CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. 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. TWINS2_HK_1SEC 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: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=TWINS2_HK_1SEC TWINS2_HK_1SEC 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: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/TWINS2_HK_1SEC/clientLibraryExample/ TWINS2_HK_1SEC 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: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=TWINS2_HK_1SEC TWINS2_HK_1SEC 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: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=TWINS2_HK_1SEC TWINS2_HK_1SEC 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: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=TWINS2_HK_1SEC&return=script TWINS2_HK_1SEC 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: D. McComas & H. Fahr at SwRI & U. Bonn, respectively. HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=TWINS2_HK_1SEC&format=gallery TWINS2_HK_1SEC Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG Two Wide-angle Imaging Neutral-atom Spectrometers (from all.xml/observatory/description/@short) 1 sec (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Magnetospheric Science (from Master/CDFglobalAttributes/Discipline) TWINS2 (from Master/CDFglobalAttributes/Source_name) Two Wide-angle Imaging Neutral-atom Spectrometers (from Master/CDFglobalAttributes/Source_name) hk (from Master/CDFglobalAttributes/Data_type) housekeeping (from Master/CDFglobalAttributes/Data_type) 1sec (from all.xml/instrument/@ID) Earth.Magnetosphere.Magnetotail Earth.Magnetosphere Earth.Magnetosheath Earth.Magnetosphere.RadiationBelt Earth.Magnetosphere.Main Epoch Epoch CATDESC: 'Epoch'. 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.' Scalar Temporal MJD Timestamp timemjd Master CDF CATDESC: 'timestamps of the LAD data in Modified Julian Date'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' MJD -1e+31 TWASPEEDSELECTION TWASPEEDSELECTION Master CDF CATDESC: 'TWASPEEDSELECTION'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -1e+31 FEEHV1P4KVMONITOR_VOLT FEEHV1P4KVMONITOR_VOLT Master CDF CATDESC: 'FEEHV1P4KVMONITOR_VOLT'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' volt -1e+31 FEEHV1P1KVMONITOR_VOLT FEEHV1P1KVMONITOR_VOLT Master CDF CATDESC: 'FEEHV1P1KVMONITOR_VOLT'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' volt -1e+31 FEEHV1P10KVMONITOR_VOLT FEEHV1P10KVMONITOR_VOLT Master CDF CATDESC: 'FEEHV1P10KVMONITOR_VOLT'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' volt -1e+31 FEEHV2P4KVMONITOR_VOLT FEEHV2P4KVMONITOR_VOLT Master CDF CATDESC: 'FEEHV2P4KVMONITOR_VOLT'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' volt -1e+31 FEEHV2P1KVMONITOR_VOLT FEEHV2P1KVMONITOR_VOLT Master CDF CATDESC: 'FEEHV2P1KVMONITOR_VOLT'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' volt -1e+31 FEEHV2P10KVMONITOR_VOLT FEEHV2P10KVMONITOR_VOLT Master CDF CATDESC: 'FEEHV2P10KVMONITOR_VOLT'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' volt -1e+31 TWAPOSITIONMONITOR TWAPOSITIONMONITOR Master CDF CATDESC: 'TWAPOSITIONMONITOR'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' volt -1e+31