Welcome to IMP page

OVERVIEW
The Interplanetary Monitoring Platform (IMP-8) satellite constitute
an overall program to study the near-interplanetary region, the outer
portions of the earth's magnetosphere, and the interactions of the sun-
earth system. This document describes the data processing and analysis
program systems for the cosmicra-ray experiments onboard the IMP-8
spacecraft, the data type and the available data in the database at
NSSDC and backup of database at UniTree.
PROGRAM DATA TYPE SPECIFICATION

DATABASE ON NSSDC'S MACHINE

STORAGE FOR BACKUP DATABASE
DATABASE ON NSSDC'S LANDSHARK
Satellite
ID 
Data Type  Floating
Number
Type 
Group Number  Location 
IMP-8  DECOM  IBM  1116-1120,1123,1967-2398 /local/data/voyager4/henry/imp8/data/decom
IMP-8  DECOM  IBM  2115-2526 /local/data/voyager4/henry/imp8/data/decom
Satellite
ID 
Data Type  Floating
Number
Type 
Reel Sequence Number  Location 
IMP-8  ENCY  IEEE  667005-682004,697001-886002 /local/data/voyager2/henry/imp8/data/ency
Satellite
ID 
Data Type  Floating
Number
Type 
Interval Number  Location 
IMP-8  CNTS  IEEE  101-2657 /local/data/voyager5/henry/imp8/data/cnts
IMP-8  PHAS  IEEE  101-2657 /local/data/voyager5/henry/imp8/data/phas
IMP-8  MATR  IEEE  2091-2657 /local/data/voyager2/henry/imp8/data/matr
IMP-8  FLUX  IEEE  2161-2657 /local/data/voyager2/henry/imp8/data/flux
IMP-8  FLEX  IEEE  2161-2657 /local/data/voyager2/henry/imp8/data/flex
Satellite
ID 
Plot  Type  Time Period  Location 
IMP-8  RATEPLOT  PostScript  10/30/1973-10/26/2001  /local/data/voyager3/henry/imp8/data/rateplot
Satellite
ID 
Data Type  # of Bins  Resolution  Time Period  Location 
IMP-8  PC-RATE FLUX  71  30 minutes  Oct. 1973 - Oct. 26, 2001  /local/data/voyager4/henry/imp8/data/pcr 
IMP-8  PC-RATE FLUX  96  6 hours  Oct. 1973 - Oct. 26, 2001 /local/data/voyager4/henry/imp8/data/pcr1 
IMP-8  PC-RATE FLUX  26  daily  Oct. 1973 - Oct. 26, 2001 /local/data/voyager4/henry/imp8/data/pcr2 
Each IMP-8 DECOM data file convers about 4-5 days data.

Each IMP-8 ENCY data file convers 12 days data.

Each IMP-8 CNTS/PHAS/MATR/FLUX/FLEX data file convers 4 days data.

The filename is in the TYPEINT.gz format, where        

TYPE : =DECOM  Experiment data
       =ENCY   Encyclopedia data
       =CNTS   Counts data
       =PHAS   Pulse Height data
       =MATR   Pha Summary data
       =FLUX   flux data
       =FLEX   flex data

 INT : =group number for DECOM data
       =reel sequence number for ENCY data
       =interval number for CNTS/PHAS/MATR/FLUX/FLEX data

The plot filename is in the imp8.yYYYY.djjj.dJJJ.typeT.ps.gz format, where

  YYYY : year
   jjj : julian day of starting time
   JJJ : julian day of stopping time
     T : rate plot type

         T      RATES INCLUDED
         ---------------------
         1A   DI.E.-F.-G, G, A.B.-C, A1.-B.-C, C 
          1   DI.E.-F.-G, A.B.-C, A1.-B.-C
          2   DI.E.-F.-G, DI.E.F.-G, DI.-D2.E.-F.-G, DI.E.F
          3   (A&B)1.B.-C, (A&B)1.-B.-C
          7   DI.DII.S1D.-F, DI.DII.S2D.-F, DI.DII.-F
        www   G, D.E.-F.-G, A.-B.-C, DI.DII.S1D.-F, DI.DII.S2D.-F

The pc-rate flux filename is in the YYMMDD_flux30m_gme_i8_v01.pcr format,
each file consists of flux data (71 energy boxes detail listing) averaging 30 minutes
for 6 months time period, where

    YY : last 2 digits of year
    MM : starting month
    DD : starting day of month
   
The pc-rate flux filename is in the YYMMDD_flux6hr_gme_i8_v01.pcr format,
each file consists of flux data (96 energy boxes detail listing) averaging 6 hours
for 2 years time period, where

    YY : last 2 digits of year
    MM : starting month
    DD : starting day of month
   
   

DATABASE ON NSSDC'S BOLERO

Time Span Data Format Location
RATE PLOT 1973/10/31 - 2001/10/26 IEEE Binary /ncf/bolero/pub/www/ssdoo/imp/rate_plots
RATES DATA 1973/10/31 - 2001/10/26 ASCII /ncf/bolero/pub/www/ssdoo/imp/rates_data
RATE DATA 1973/10/31 - 2001/10/26 ASCII /ncf/bolero/pub/www/ssdoo/imp/rate_data

Each rate plot file covers 1 hour average of 10 days rates (DI.E.-F.-G,
G, A1.-B.-C, DI.DII.S1D.-F, DI.DII.S2D.-F) data.

The filename is in the IMP8_GME_yyjjj_YYJJJ.gif format, where        

  yy : last 2 digits of starting year
 jjj : julian day of starting time
  YY : last 2 digits of stopping year
 JJJ : julian day of stopping time




In the directory /ncf/bolero/pub/www/ssdoo/imp/rate_data , Each rate data file covers 1 hour average rate data. A 4 column data file consisting of X, Y, and the errors in Y. The error bar riser is drawn from (X,Y+DY1) to (X,Y-DY2).     X : fraction of julian day     Y : 1 hour average rate count   DY1 : error bar   DY2 : error bar  The filename is in the yYYYY.djjj.dJJJ.rateID format, where           YYYY : year    jjj : julian day of starting time    JJJ : julian day of stopping time     ID : rate id          ID     RATE          01   DI.E.-F.-G          14   G          25   A1.-B.-C          35   DI.DII.S1D.-F          36   DI.DII.S2D.-F
In the directory /ncf/bolero/pub/www/ssdoo/imp/rates_data , Each rate data file covers 1 hour average rate data. A 3 column data file consisting of X, Y, and the errors DY in Y.     X : fraction of julian day     Y : 1 hour average rate count    DY : error bar The filename is in the YYYY_sss_eee_ID format, where           YYYY : year    sss : julian day of starting time    eee : julian day of stopping time     ID : rate id           ID (rate)          DI.E.-F.-G          G          A1.-B.-C          DI.DII.S1D.-F          DI.DII.S2D.-F
Each IMP-7/8 file covers 4 days data, each IMP-6 file covers 1 orbit data. 

The filename is in the TYPE_INT.gz format, where        

TYPE : =C   CNTS data
       =P   PHAS data
 INT : =interval number for IMP-7/8
       =orbit number for IMP-6
BACKUP DATABASE ON UNITREE
Satellite
ID 
Data Type  Floating
Number
Type 
Group Number  Location 
IMP-8  DECOM  IBM  1116-1120,1123,1967-2107,2115-2476 /u2/xrhhl/backup/decom
Satellite
ID 
Data Type  Floating
Number
Type 
Reel Sequence Number  Location 
IMP-8  ENCY  IEEE  667005-682004,697001-869001 /u2/xrhhl/backup/ency
Satellite
ID 
Data Type  Floating
Number
Type 
Interval Number  Location 
IMP-8  CNTS  IBM  101-2090 /u2/xrhhl/backup/cnts/ibm
IMP-8  PHAS  IBM  101-2090 /u2/xrhhl/backup/phas/ibm
Satellite
ID 
Data Type  Floating
Number
Type 
Interval Number  Location 
IMP-8  CNTS  IEEE  101-2604 /u2/xrhhl/backup/cnts
IMP-8  PHAS  IEEE  101-2604 /u2/xrhhl/backup/phas
IMP-8  MATR  IEEE  2091-2604 /u2/xrhhl/backup/matr
IMP-8  FLUX  IEEE  2161-2601 /u2/xrhhl/backup/flux
IMP-8  FLEX  IEEE  2161-2601 /u2/xrhhl/backup/flex
Satellite
ID 
Plot  Type  Time Period  Location 
IMP-8  RATEPLOT  PostScript  10/30/1973-03/14/2001  /u2/xrhhl/backup/rateplot
Satellite
ID 
Data Type  # of Bins  resolution  Time Period  Loiation 
IMP-8  PC-RATE FLUX  71  30 minutes  Oct. 1973 - Mar. 17, 2001 /u2/xrhhl/backup/pcr 
IMP-8  PC-RATE FLUX  91  6 hours  Oct. 1973 - Mar. 17, 2001 /u2/xrhhl/backup/pcr1 
IMP-8  PC-RATE FLUX  26  daily  Oct. 1973 - Mar. 17, 2001 /u2/xrhhl/backup/pcr2 

BACKUP DATABASE ON 8MM TAPE

Satellite
ID 
Data Type  Floating
Number
Type 
Group Number  Location 
IMP-8  DECOM  IBM  1116-1120,1123,1967-2107 GSFC's Building 26, Room 123
IMP-8  DECOM  IBM  2115-2148 GSFC's Building 26, Room 123
Satellite
ID 
Data Type  Floating
Number
Type 
Reel Sequence Number  Location 
IMP-8  ENCY  IEEE  667005-682004,697001-759001 GSFC's Building 26, Room 123
Satellite
ID 
Data Type  Floating
Number
Type 
Interval Number  Location 
IMP-8  CNTS  IEEE  2051-2274 GSFC's Building 26, Room 123
IMP-8  PHAS  IEEE  2046,2091-2274 GSFC's Building 26, Room 123
IMP-8  MATR  IEEE  2091-2274 GSFC's Building 26, Room 123
IMP-8  FLUX  IEEE  2061-2272 GSFC's Building 26, Room 123
IMP-8  FLEX  IEEE  2061-2272 GSFC's Building 26, Room 123
Satellite
ID 
Data Type  # of Bins  resolution  Time Period  Loiation 
IMP-8  PC-RATE FLUX  71  30 minutes  Oct. 1973 - Jun. 1997 GSFC's Building 26, Room 123
IMP-8  PC-RATE FLUX  91  6 hours  Oct. 1973 - Jun. 1997 GSFC's Building 26, Room 123