Data Set Information
DATA_SET_NAME JUNO JUPITER UVS 2 EXPERIMENT DATA RECORD V1.0
DATA_SET_ID JNO-J-UVS-2-EDR-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION DATA SET OVERVIEW:The Juno Ultraviolet Spectrograph (UVS) CODMAC Level 2 Experiment DataRecord is a collection of the far ultraviolet photon detections obtainedby the UVS instrument, in raw form. As such, it constitutes thepermanent record of the raw UVS data. These data include both theinstrument science and housekeeping data, organized into extensionswithin files formatted according to the Flexible Image Transport System(FITS) standard, version 2.1b. The UVS EDR archive enables reprocessingof the raw science data as radiometric and geometric calibrationprocessing routines improve. Investigators interested in applyingadvanced calibration methods or needing to understand the properties ofthe raw data will find the EDR products useful. Most investigators,however, will be interested in using either the UVS data productscontained in the CODMAC Level 3 Reduced Data Record, as radiometric andgeometric calibration processing has already been done for theseproducts, or the UVS CODMAC Level 5 far ultraviolet map products.PARAMETERS:The fundamental measured parameters contained in the UVS EDR data set arethe nearest time markers and the spatial and spectral locations on theUVS detector for each of the recorded far ultraviolet photon detectionevents. From these values raw calculated count rates (counts/sec)integrated over all spatial and spectral bins are also derived. Thesampling interval for the derived count rate values is determined by thecommanded rate at which the time markers are inserted into the datastream. This value will normally be set to 250 Hz.PROCESSING:UVS EDR data products will be generated at the UVS Science OperationsCenter (SOC), located at the Southwest Research Institute in San Antonio,Texas. The products will be generated by an automated pipeline process.The UVS instrument will nominally generate one to many housekeepingtelemetry files and science data files per orbit. Once per day theseUVS-generated files will be retrieved from the Juno spacecraft by theJuno Mission Operations Center (MOC) and then transferred by the MOC tothe UVS SOC. The automated UVS SOC pipeline will ingest these files andinvoke software to process them into EDR data product files. Nocalibration of the science data will be done at this time. Rawhousekeeping telemetry values will be converted to engineering units,where applicable, and these converted values will be included in theEDR data product files.DATA:The UVS EDR data product file will contain the following types of data:1. Spectral vs. Spatial Image: This is a reconstructed histogram generated from the pixel list data in the science data file. Photon acquisition events will be binned according to their spectral and spatial components. This summary image is used as a 'quick-look' check on data quality. [Extension 0 : primary FITS header and data unit (HDU)]2. Spatial vs. Time Image: This is similar to the first dataset, but the data are binned based on spatial and temporal parameters. The 360 degree histogram will be split into 5 panels of 72 degree. A new histogram will be started every time the scan mirror moves, as determined from the housekeeping data. This summary image is used as a 'quick-look' check on data quality. [Extension 1]3. Frame List: This dataset contains a list of the generated frame acquisitions. The list includes, for each frame, the instrument frame sequence number, start and stop times, tag bytes, quality factor and other instrument state information. The frame acquisition times and instrument state data contained in this list are used to cross-reference with the pixel list mode data for purposes of selecting data and checking timing consistency. [Extension 2]4. Scan Mirror Data: This dataset contains a listing of all scan mirror positions and information on when the mirror entered and exited each position. These data are taken from the housekeeping packets. [Extension 3]5. Raw Frame Data: This dataset contains all of the raw data from the science data file except for the file header. [Extension 4]6. Analog Count Rate: This dataset contains a sequence of time ordered photon count rates read from the housekeeping data packets. [Extension 5]7. Digital Count Rate: Similar to the previous dataset, this will contain the count rate as determined from the raw science data. These data will be shown as counts/second. [Extension 6]8. Pulse Height Distribution (Lyman Alpha): This is one of three histograms where the bins are arranged as pulse height vs. time. One histogram will be created per spin. This histogram contains photons whose spectra are recorded on detector columns numbered between 850 and 930. [Extension 7]9. Pulse Height Distribution (Stellar): This is one of three histograms where the bins are arranged as pulse height vs. time. One histogram will be created per spin. This histogram contains photons whose spectra are recorded on detector columns numbered between 931 and 1770. [Extension 8]10. Pulse Height Distribution (Stim): This is one of three histograms where the bins are arranged as pulse height vs. time. One histogram will be created per spin. This histogram contains photons whose spectra are recorded on detector columns numbered between 0 - 149 and 1950 - 2047. [Extension 9]11. Housekeeping Data: This dataset contains the complete housekeeping dataset, both in raw format and, where applicable, in calibrated engineering units. HK data are included here to assist with joint instrument and data quality trending analyses (foreseen and unforeseen). [Extension 10]12. Parameter List: This table records the known values of the instrument parameter table, as reported in the housekeeping data. [Extension 11]ANCILLARY DATA:Ancillary data used in the generation of the UVS EDR data set includethose values required to convert instrumental engineering quantitiescontained in the housekeeping data from raw values to physical units.These data have been obtained from the UVS engineers at the SouthwestResearch Institute in San Antonio, Texas.COORDINATE SYSTEM:The UVS EDR data product is a CODMAC Level 2 product. As such, thescience data contained therein have not been corrected for instrumentaleffects, calibrated, or located in space. The data are reportedaccording to the two- dimensional detector coordinate system in X and Y(2048 x 256, respectively).SOFTWARE:Because the UVS EDR data product files adhere to version 2.1b of the FITSstandard, all FITS readers up to this standard should be able tosuccessfully read these files. There are many such FITS readers freelyavailable in the public domain.MEDIA/FORMAT:The UVS EDR data product files are written in FITS format, and the formatof each file is described in an accompanying detached PDS label. The EDRarchive itself will be electronically delivered from the Juno SOC (JSOC)to the PDS Imaging Node, where it will be made generally available viathe World Wide Web.
DATA_SET_RELEASE_DATE 3000-01-01T00:00:00.000Z
START_TIME 1965-01-01T12:00:00.000Z
STOP_TIME N/A (ongoing)
MISSION_NAME
MISSION_START_DATE
MISSION_STOP_DATE
TARGET_NAME JUPITER
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID
INSTRUMENT_NAME ULTRAVIOLET SPECTROGRAPH
INSTRUMENT_ID UVS
INSTRUMENT_TYPE ULTRAVIOLET SPECTROMETER
NODE_NAME Planetary Atmospheres
ARCHIVE_STATUS ARCHIVED - ACCUMULATING
CONFIDENCE_LEVEL_NOTE Confidence level information will be provided after more thorough analysisof the data.
CITATION_DESCRIPTION Trantham, B.J., JUNO J UVS EXPERIMENT DATA RECORD V1.0,JNO-J-UVS-2-EDR-V1.0, NASA Planetary Data System, 2014.
ABSTRACT_TEXT The Juno Ultraviolet Spectrograph (UVS) CODMAC Level 2 Experiment Data Recordis a collection of the far ultraviolet photon detections obtained by the UVSinstrument, in raw form. As such, it constitutes the permanent record of theraw UVS data. These data include both the instrument science andhousekeeping data, organized into extensions within files formattedaccording to the Flexible Image Transport System (FITS) standard,version 2.1b. The UVS EDR archive enables reprocessing of the raw sciencedata as radiometric and geometric calibration processing routines improve.Investigators interested in applying advanced calibration methods or needingto understand the properties of the raw data will find the EDR productsuseful. Most investigators, however, will be interested in using either theUVS data products contained in the CODMAC Level 3 Reduced Data Record,as radiometric and geometric calibration processing has already been donefor these products, or the UVS CODMAC Level 5 far ultraviolet map products.
PRODUCER_FULL_NAME BRAD TRANTHAM
SEARCH/ACCESS DATA
  • Atmospheres Website
    		•