Data Set Information
DATA_SET_NAME GO JUPITER EPD REFORMATTED HIGH RES SECTOR V1.0
DATA_SET_ID GO-J-EPD-2-REDR-HIGHRES-SECTOR-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION This data set contains two versions of three different data filetypes. One version is a corrected form of the other ('C'). Thecorrected data are adjusted for minute gaps in between the detectorcycles. Each version contains the following types: 16 sector (64 channel) at 1.25s time resolution 32 sector (16 channel) at 0.6s time resolution 64 sector (8 channel) at 0.3s time resolutionThis data ranges from the Io flyby (December 1995) to end of mission.All available motor positions are provided. Step 0, which looks behindthe background shield, is included for an indication of the backgroundpenetration of the detector. The rates reported are in units of(counts/sec), pitch and phase angles are in (radians). The sectors areordered in time.Pitch angle is the angle between the look direction of the detectorand the observed magnetic field. Phase angle is the angle measured fromthe x-axis to the projection of the look direction onto the xy planeof a local magnetic coordinate system where the z-axis is the magneticfield direction, the x-axis lies in a plane defined by the direction ofcorotation and the z-axis, and y completes the set of the right handcoordinate system.Transform Counts/Sec-> Differential Flux:Given the count rate R, pass band of the particle dE, and thegeometrical factor G of the detector it is possible to calculate(dE and G are available in the EPD instrument template) differentialflux j=R/(G dE). For example, given a rate 3000 counts/sec for channelE2, we find in the EPD instrument template thatdE= (0.055-0.042)=.013 MeV, G=.035 cm**2 Sr.This gives a differential flux of 6.59 10**06 (cm**2 MeVs Sr)**-1.For more detailed information about the Io encounter and the energeticparticle data included in this browse set see Electron Beams and IonComposition Measured at Io and its Torus by Williams et al., Science Vol.274, 309-464, 18 Oct 1996.[WILLIAMSETAL1996].This data set is highly discontinuous in time. Because of the severelimitations in the downlink capability of the Galileo spacecraft,LPW rate data were recorded only for targeted observations. Mostof these data were acquired near the Galilean moons, althoughselected observations were made in various locations around themagnetosphere. Table 1 below provides a listing of the start andstop times of the recorded data segments, organized according to.where the data were acquired.-----------------------------------------------------------------Table 1. LPW Resolution Data Coverage**-----------------------------------------------------------------Io Flybys:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------I00 IO 95-12-07 15:21 184 5.4- 7.7 10.6-12.3 204-290I24 IO 99-10-11 03:42 66 5.7- 6.0 10.1-10.9 59- 87 2I25 IO N/A 1I27 IO 00-02-22 13:04 81 5.9- 6.0 8.4- 9.4 64- 97I31 IO 01-08-06 04:25 64 5.9 3.9- 4.7 145-171I32 IO 01-10-16 01:06 73 5.9- 6.1 4.8- 5.7 253-283I33 IO N/A 1Europa Flybys:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID* Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------E04 EUR 96-12-19 06:33 51 9.4- 9.5 16.6-16.9 147-173E06 EUR 97-02-20 16:37 312 9.5- 9.1 12.8-14.8 326-125E11 EUR 97-11-06 20:09 162 9.0- 9.4 10.8-11.9 211-294E12 EUR 97-12-16 11:42 46 9.4- 9.6 14.5-14.8 107-131E14 EUR 98-03-29 13:05 55 9.4- 9.6 14.3-14.7 176-204E15 EUR 98-05-31 20:42 61 9.4- 9.6 9.9-10.3 277-308E16 EUR N/A 1E18 EUR N/A 1E19 EUR 99-02-01 01:49 50 9.2- 9.4 9.7-10.0 245-270E26 EUR 00-01-03 17:29 61 9.2- 9.7 2.8- 3.1 346- 18Ganymede Flybys:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------G01 GAN 96-06-27 06:07 45 14.9-15.2 11.2-11.3 163-188 4G02 GAN 96-09-06 18:32 56 14.8-15.2 10.7-10.9 143-174G07 GAN 97-04-05 06:44 56 14.8-15.2 19.7-19.8 5- 37G08 GAN 97-05-07 15:36 46 14.8-15.1 8.1- 8.2 276-302G28 GAN 00-05-20 09:40 60 14.7-15.3 0.7- 0.8 335- 9G29 GAN 00-12-28 07:57 57 14.7-15.2 23.9- 0.0 205-237Callisto Flybys:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------C03 CALL 96-11-04 13:15 45 26.1-26.4 7.8 231-258C09 CALL 97-06-25 13:25 46 26.1-26.4 5.5 47- 74C10 CALL 97-09-16 23:49 60 26.0-26.4 5.0- 5.1 318-354C30 CALL 01-05-25 11:09 36 26.2-26.5 13.1-13.2 68- 89Amalthea Flyby:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------A34 AMA 02-11-05 02:44 231 6.2- 2.3 6.4- 3.0 102-149Inner Magnetosphere:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------J00 PJOV 12-07-95 23:22 124 4.0- 5.2 18.4-20.5 18- 62I24 TOR N/A 1I32 TOR 01-10-15 22:55 33 5.8- 5.9 3.0- 3.4 198-211I25 TOR 99-11-25 21:07 174 5.9- 7.0 5.1- 7.0 336- 53 2A34 PSX7 02-11-05 01:05 90 6.3- 7.7 17.7-18.2 24- 70C23 PJOV 99-09-14 14:36 412 6.5- 7.7 6.1-10.3 52-239C21 PJOV 99-07-01 23:53 113 7.6- 8.2 7.4- 8.3 247-301C22 PJOV 99-08-12 08:18 288 7.3- 7.6 8.4-11.0 225- 0E11 EQX (see E11 EUR) 3I32 RAMP 01-10-15 15:31 115 7.8-8.9 22.9-23.7 354- 52C10 EQX 97-09-18 22:34 46 9.2 12.5-12.8 102-125C20 PJOV 99-05-03 15:59 122 9.4 10.0-10.8 45-106A34 PSX6 02-11-04 21:48 45 10.3 17.0-17.1 285-300Middle Magnetosphere:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------C09 TAR 97-06-28 13:50 61 18.1-18.5 18.1-18.2 324-359C03 TAR 96-11-05 07:04 40 19.3-19.0 8.9- 9.0 140-163G08 QRS 97-05-06 13:00 129 25.0-25.8 5.9- 6.0 63-140G01 PSX 96-06-30 02:00 46 27.2-27.5 22.8 292-319 4A34 PSX2 02-11-03 15:28 45 29.4-29.0 15.6 276-303A34 PSX1 02-11-03 10:38 45 31.8-31.4 15.5 102-132G02 PSX 96-09-11 02:38 40 39.2-39.4 23.8-23.9 121-145G07 PSX 97-03-30 18:49 46 46.2-46.4 4.8 125-152Magnetotail:----------------------------------------------------------------- Dur. Jup Range Local Time S3 WLONObs. ID Start Time (min) (Rj) (hours) (deg). Note-----------------------------------------------------------------C09 DSK1 97-07-04 14:09 118 64 22.1 99-170 4C09 DSK2 97-07-14 10:03 45 107 23.2 357- 25 4E18 DSK 98-12-10 19:36 288 109 22.5 285- 98C09 DSK3 97-07-23 13:11 46 129 23.7 18- 45C09 DAWN 97-08-23 14:07 122 130 0.9- 1.0 17- 90C09 APJ 97-08-07 11:06 101 143 0.3 30- 91* The ID element is derived from the SEF identifier for the recorded observation. The recording identifiers translate to: IO, GAN, EUR, CALL - satellites PSX - plasma sheet crossing TAR - trans-auroral region QRS - quarter rotation survey DSK - dusk side of orbit (see local time) DAWN - dawn side of orbit (see local time) APJ - apojove TOR - Io torus EQX - magnetic equator crossing PJOV - perijove RAMP - outer torus These designations were defined by the sequence team.** LPW coverage indicates time periods that were recorded in LPW format. Not all data files span entire recorded interval.Notes: 1 = Recording lost due to spacecraft safing/anomaly 2 = Stats given for primary observation interval only, data file. includes additional intervals of 'ridealong' data. 3 = E11 EUR and EQU are continuous and listed as a single observation. 4 = No data available for this interval.Table 2 provides a listing of the various satellite closestapproach times and the location of the spacecraft, relative tothe satellite at these times.------------------------------------------------------------Table 2. Satellite Flyby Characteristics*------------------------------------------------------------ Satellite Planetocentric Coords Range Lat E LonOrb Moon C/A Time (Rm**) (deg) (deg) Note------------------------------------------------------------ 0 IO 95-12-07 17:45:58 1.50 -9.6 258.9 W24 IO 99-10-11 04:33:03 1.34 4.5 135.9 U27 IO 00-02-22 13:46:41 1.11 18.5 157.4 U31 IO 01-08-06 04:59:21 1.11 77.5 187.7 P32 IO 01-10-16 01:23:21 1.10 -78.5 135.3 P33 IO 02-01-17 14:08:28 1.06 -43.5 41.8 F 4 EUR 96-12-19 06:52:58 1.45 -1.7 322.4 F 6 EUR 97-02-20 17:06:10 1.38 -17.0 34.7 F11 EUR 97-11-06 20:31:44 2.31 25.7 218.7 F12 EUR 97-12-16 12:03:20 1.13 -8.7 134.4 U14 EUR 98-03-29 13:21:05 2.06 12.2 131.2 U15 EUR 98-05-31 21:12:57 2.62 15.0 225.4 W19 EUR 99-02-01 02:19:50 1.93 30.5 28.1 U26 EUR 00-01-03 17:59:43 1.22 -47.1 83.4 U 1 GAN 96-06-27 06:29:07 1.32 30.4 246.7 W 2 GAN 96-09-06 18:59:34 1.10 79.3 236.4 P 7 GAN 97-04-05 07:09:58 2.18 55.8 270.4 W 8 GAN 97-05-07 15:56:10 1.61 28.3 84.8 U28 GAN 00-05-20 10:10:10 1.31 -19.0 92.4 U29 GAN 00-12-28 08:25:27 1.89 62.2 269.0 P 3 CALL 96-11-04 13:34:28 1.47 13.2 282.3 W 9 CALL 97-06-25 13:47:50 1.17 2.0 101.0 U10 CALL 97-09-17 00:18:55 1.22 4.6 281.3 W30 CALL 01-05-25 11:23:58 1.06 13.6 254.6 W34 AMA 02-11-05 06:18:40 2.89 -47.7 74.8 U * Satellite encounters with recorded data only ** Moon Rm (km) ======================= Amalthea 86.2 Io 1818 Europa 1560 Ganymede 2634 Callisto 2409 Notes: Negative latitudes are southern hemisphere, U = upstream F = flank W = wake P = polar
DATA_SET_RELEASE_DATE 1999-06-25T00:00:00.000Z
START_TIME 1995-12-07T03:21:00.000Z
STOP_TIME 2003-09-21T06:22:00.000Z
MISSION_NAME GALILEO
MISSION_START_DATE 1977-10-01T12:00:00.000Z
MISSION_STOP_DATE 2003-09-21T12:00:00.000Z
TARGET_NAME IO PLASMA TORUS
GANYMEDE
IO
CALLISTO
AMALTHEA
EUROPA
JUPITER
TARGET_TYPE PLASMA CLOUD
SATELLITE
PLANET
INSTRUMENT_HOST_ID GO
INSTRUMENT_NAME ENERGETIC PARTICLES DETECTOR
INSTRUMENT_ID EPD
INSTRUMENT_TYPE ENERGETIC PARTICLES DETECTOR
NODE_NAME planetary plasma interactions
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE The data in this set is a product of the processing done by theGalileo Energetic Particles Detector Archive Processor (EPDPROC1991).Data in this browse set includes all the data available for LEMMSrates with data quality flag 0 (bad) and 1 (good). Rates with a dataquality flag of 0 are set to -1.0, all other rates have a dataquality flag of 1 including rates of 0.000. The error bars for eachrate is calculated from the standard deviation (SD) formula for adistribution of particles following Poisson statistics(n=number of counts) SD=+-n/Sqrt(n). The EPD team has not yet come upwith a consistent way to remove the background from the data. Closeattention should be paid to the step 0 count rate. The difference incount rate between the foreground (step 1-7) and the background(step 0) will give an indication of the validity of this data. Forexample, several times during the Io encounter the Galileo Space Craftstepped behind the background shield (step 0). There was little or noreduction in rate for the higher energy electron channels F0 to F3 fromthe foreground. This indicates that they are dominated by background.
CITATION_DESCRIPTION Williams, D.J., Armstrong, T.P., McEntire, R.W., GO JUPITER EPD REFORMATTED HIGH RES SECTOR V1.0, GO-J-EPD-2-REDR-HIGHRES-SECTOR-V1.0, NASA Planetary Data System, 1999
ABSTRACT_TEXT This data set contains two versions of three different data file types. One version is a corrected form of the other ('C'). The corrected data are adjusted for minute gaps in between the detector cycles. This data ranges from the Io flyby (December 1995) to end of mission. All available motor positions are provided. Step 0, which looks behind the background shield, is included for an indication of the background penetration of the detector. The rates reported are in units of (counts/sec), pitch and phase angles are in (radians). The sectors are ordered in time
PRODUCER_FULL_NAME DR. THOMAS P. ARMSTRONG
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