Data Set Overview
=================
 
The PLASMAG-1 instument package included six different sensors:
A0 plasma impact detector for measuring neutral particle flux,
   (manufactured by R. Grard, ESA/ESTEC, Noordwijk, The Netherlands)
A1 Faraday cup for measuring integral ion flux from solar direction,
A2 Faraday cup for measuring integral ion flux and neutral particles
   from ram direction,
A3 spherical electrostatic analyzer for measuring ions from ram direction
   in the energy range of 15 eV - 3.6 keV in 120 logarithmically
   spaced channels,
A4 spherical electrostatic analyzer for measuring ions from solar direction
   in the energy range of 60 eV - 30 keV in 60 logarithmically
   spaced channels,
A5 cylindrical electrostatic analyzer for measuring ions perpendicular
   to the ecliptic plane in the energy range of 2 eV - 10 keV in
   30 logarithmically spaced channels.
 
    The sensitivity of the electron analyzer A5 was very
    low.  Detector A3 of Vega-2 was fatally damaged 2.5
    min before closest approach.  The channeltrons of A3
    were saturating at higher count rates.
 
 
    Field of view of the detectors:
    A1: 90x90 deg (centered on solar direction),
    A2: 26x26 deg (centered on ram direction),
    A3: 32x12 deg (centered on ram direction),
    A4: 36x32 deg (centered on solar direction),
    A5: 7x7 deg (perpendicular to ecliptic plane).
 
    Effective apperture: A1: 1.6 cm**2
    A2: 0.93  cm**2
    A3: 0.0193 cm**2
    A4: 0.00455 cm**2
    A5: 0.0036  cm**2
 
    Energy resolution:
    A3: 3.2 %
    A4: 3.85%
    A5: 7.5 %
 
    One complete spectrum was taken by A3, A4, and A5 in every
    second during the BRL (high telemery rate) seance.
    Sampling times for each energy channel:
    A3: 0.005 sec
    A4: 0.005 sec
    A5: 0.021 sec
 
 
 
     During the cruise phase data were recorded by an
    on-board magnetometer at lower telemetry rate.
 
     The data were measured during the BRL seance on
    March 9, 1986.
 
 
1. parameter:       time in sec - end of a 10 sec averaging interval
                    (0 sec is 4:00 UT in spacecraft time)
2-30. parameters:   count rates observed by A5 (electrons)
31-90. parameters:  count rates observed by A4
                    (ions from solar direction)
91-210. parameters: count rates observed by A3
                    (ions from ram direction)
 
 
The energy levels for the 29 channels of detector A5 in eV:
     1.9     2.9     3.8     5.8     7.7    10.6    14.9
  19.2    25.9    35     0
    47.0    61.0    84.5   113.3   168.2   229.7   311.3
 410.9   553.0   744     8
   999.2  1349.0  1804.8  2430.2  3225.2  4364.7  5869.9
7868.0 10571.0
 
 
The energy levels for the 60 channels of detector A4 in eV:
    64.0    73.8    78.7    88.6    94.3   103.3   114.0   128.7
  138.6   154     2
   173.8   188.6   209.1   235.3   255.0   286.2   317.3   351.0
  387.0   431     3
   480.5   534.6   594.5   660.9   734.7   818.4   912.7  1014.3
 1123.4  1246     4
  1384.2  1531.8  1689.2  1877.8  2099.2  2341.1  2606.0  2896.2
 3214.4  3575     2
  3985.2  4436.2  4936.4  5494.0  6117.2  6724.0  6724.0  7544.0
 8388.6  9290     6
 10291.0 11439.0 12783.8 14268.0 15924.4 17728.4 19647.2 21861.2
24403.2 27191     2
 
The energy levels for the 120 channels of detector A3 in eV:
    15.6    17.2    18.9    19.7    20.5    22.1    23.0    24.6
  27.1    28     3
    29.5    30.8    32.0    33.2    34.4    35.7    36.9    38.1
  39.4    40     6
    41.8    43.5    45.1    45.9    46.7    48.0    50.0    51.3
  52.5    54     9
    57.4    59.4    61.5    64.0    66.8    69.7    73.0    76.7
  80.8    84     9
    89.4    93.9    98.4   102.9   107.4   112.3   117.7   123.0
 128.7   134     5
   140.6   147.2   154.2   161.5   169.3   177.1   185.3   194.3
 203.8   213     2
   223.0   234.1   245.6   257.5   269.8   282.9   296.4   310.0
 323.9   337     8
   352.2   366.5   381.3   398.5   418.2   440.3   464.1   487.9
 512.5   537     1
   561.7   587.9   615.8   645.3   676.5   710.9   747.8   787.2
 828.2   870     8
   914.3   959.4  1005.3  1052.9  1102.1  1152.1  1203.8  1262.0
1325.1  1393     1
  1466.2  1539.1  1612.9  1687.6  1763.0  1845.0  1935.2  2033.6
2140.2  2248     4
  2358.3  2469.8  2583.8  2702.7  2829.8  2966.8  3112.7  3268.5
3432.5  3604     7
 
 
     Measurements were performed in every sec, data
    provided here are 10 sec averages.
 
 
    Time of first observation:  4:13:00 UT
    Time of first data in file: 4:13:10 UT (790 sec)
    Time of last observation:   8:40:00 UT
    Time of last data in file:  8:40:00 UT (16800 sec)
    There was a data gap between 7:17:30 UT (11850 sec) and 7:45:10
    (13510 sec).
    Missing or bad data: -99
 
 
     The detector A3 was fatally damaged at 7:17:31 UT
    when the telemetry connection also broke down.  At
    7:45:10 UT the connection with the instrument was
    re-established.

Confidence Level Overview
  =========================
  N/A