urn:nasa:pds:comimi_inca_uncalibrated:collection_data_mimi_inca_acc:iacc0_2009002_0004
4.0
IACC0_2009002_0004
1.9.0.0
Product_Observational
2018
Subsector accumulations for the INCA sensor of the MIMI instrument on the
Cassini spacecraft
2009-01-02T00:00:00Z
2009-01-02T23:59:00Z
Science
Raw
Cassini-Huygens
Mission
urn:nasa:pds:context:investigation:mission.cassini-huygens
data_to_investigation
Cassini Orbiter
Spacecraft
urn:nasa:pds:context:instrument_host:spacecraft.co
is_instrument_host
Magnetospheric Imaging System
Instrument
urn:nasa:pds:context:instrument:mimi.co
is_instrument
Saturn
Planet
urn:nasa:pds:context:target:planet.saturn
data_to_target
1/1609547995.223
1/1609634396.127
$PHASE NAME
$ORBIT NUMBER
IACC0_2009002_0004.CSV
2018-11-19T16:53:30.869
f7d34d8720533436ea4d862e60eb0154
1085
PDS DSV 1
19318
Carriage-Return Line-Feed
Comma
24
0
300
PURPOSE
1
ASCII_String
32
The PURPOSE field identifies the purpose or function of the data
contained in current row. Valid entries include:
SCI - normal science data values
VALID_MIN - the inclusive or exclusive minimum value allowed for this
column
VALID_MAX - the inclusive or exclusive maximum value allowed for this
column
MIN - the minimum value for this column present in this product
MAX - the maximum value for this column present in this product
MEAN - the mean of the values in this column in this product, this
value will be rounded for integer columns
STDEV - the standard deviation of the values in this column in this
product, this value will be rounded for integer columns
UTC
2
ASCII_String
21
The time as YYYY-DOYTHH:MM:SS.HHH calculated using the starting
Ephemeris Time for this record
SCLOCK
3
ASCII_String
16
SCLOCK in ticks calculated using the starting Ephemeris Time for this
record. The SCLOCK format is #/NNNNNNNNNN.FFF where
# is the partition number
NNNNNNNNNN is the number of ticks since the beginning of the mission
FFF is the fine number of ticks as 1/256 of a second
START_EPHEMERIS_S
4
ASCII_Real
20
SECOND
The J2000 ephemeris time in seconds at the beginning of the time period
for this record.
757339265.000
-71063936.000
END_EPHEMERIS_S
5
ASCII_Real
20
SECOND
The J2000 ephemeris time in seconds at the end of the time period for
this record.
757339265.000
-71063936.000
SPIN_COUNTER
6
ASCII_Integer
10
MIMI always organizes time by Spins, when Cassini is not in spin mode,
MIMI uses a commanded virtual spin period. This column is a counter
that increments with each spin or virtual spin. This counter resets
when MIMI undergoes certain operations like shutdown, and is not
sufficiently large that it will not roll over.
16383
0
SECTOR
7
ASCII_Integer
10
Each spin is divided into 16 sectors. Sectors have no meaning with
regard to pointing. They are nothing more or less than segments of
time. This column contains the zero based index of the sector.
Sectors have special significance in that the beginning of a sector is
the only time that MIMI records the SCLOCK. All other times must be
calculated based on the subsector, and, where appropriate, microsector
values provided below. Times in this product were calculated in this
manner.
15
0
START_SECTOR_SCLOCK_MAJOR
8
ASCII_Integer
10
COUNT
The value of the Spacecraft clock at the beginning of Sector during
which this record occurred. This, combined with subsector, and
microsector where appropriate, is the monotonic timestamp for the each
record. All other times are calculated from this time representation.
4000000000
0
SUBSECTOR
9
ASCII_Integer
10
Each sector is divided into 16 subsectors. Subsectors have no meaning
as far as pointing. They are nothing more or less than segments of
time.
15
0
MICROSECTORS_COVERED
10
ASCII_Integer
10
Each subsector is divided into 16 microsectors. Microsectors have no
meaning as far as pointing. They are nothing more or less than segments
of time. This column is the number of microsectors over which this
record was recorded, i.e. 16 for one subsector, 32 for two subsectors,
256 for one sector, etc.
1024
2
SPIN_PERIOD_S
11
ASCII_Real
20
SECOND
The spacecraft spin period in seconds. If the spacecraft is not in spin
mode, this is the virtual spin period used by the MIMI sensor to
determine the timing of data collection. This value is not very
reliable. It represents the 'nominal' spin period. When the spin period
is changing, it will not be very accurate.
3072.000
680.000
STARING
12
ASCII_Integer
10
0 if the spacecraft is in spin mode, 1 if the not in spin mode.
1
0
SENSOR_BITRATE
13
ASCII_Integer
1
Describes the bit rate of each of the sensors (CHEMS, INCA, LEMMS).
1 = very low, 2 = low, 3 = medium, 4 = high, 5 = very high.
5
1
START_FAST
14
ASCII_Integer
10
This field contains the total number of start events triggering the
Start MCP Fast discriminator (used to start the TOF clock).
10000000
0
START_PULSE
15
ASCII_Integer
10
This field contains the total number of start events pulse triggering
the Start MCP Pulse discriminator (used in calculating Start Position).
10000000
0
START_COINCIDENCE
16
ASCII_Integer
10
This field contains the total number of start events with Start_Fast
and Conicidence signals within a ~200 ns window.
10000000
0
STOP_FAST
17
ASCII_Integer
10
This field contains the total number of stop events triggering the Stop
MCP Fast discriminator (used to stop the TOF clock).
10000000
0
STOP_PULSE
18
ASCII_Integer
10
This field contains the total number of stop events triggering the Stop
MCP Pulse discriminator (used in calculating Stop Position).
10000000
0
FULL
19
ASCII_Integer
10
This field contains the total number of events triggering Start Fast,
Stop Fast, and Coincidence discriminators within the maximum timing
windows.
10000000
0
COINCIDENCE
20
ASCII_Integer
10
This field contains the total number of events triggering the
Coincidence MCP discriminator (designed as a clean-up signal against
accidental Start-Stop coincidences; used in practice as a sunlight
monitor for automatic Start and Stop MCP high voltage sun-safing).
10000000
0
TIME
21
ASCII_Integer
10
This field contains the total number events with valid
Start_Fast-Stop_Fast pairs
(Start and Stop timing signals that fall within the maximum TOF timing
window of ~150ns).
10000000
0
STOP_COINCIDENCE
22
ASCII_Integer
10
This field contains the total number of events with Coincidence and
Stop_Fast signals within a 40 ns window.
10000000
0
EVENTS_RECEIVED
23
ASCII_Integer
10
This field contains the total number events judged valid by the
front-end fast logic (typically in flight, those events with valid
TOFs) and passed on to the DPU for binning into images. This number
may differ from the number of valid TOFs if the valid TOF event rate
exceeds the rate at which the DPU can accept events.
10000000
0
EVENTS_PROCESSED
24
ASCII_Integer
10
This field contains the total number of the EVENTS_RECEIVED (previous
field) that are in fact processed by the DPU for binning into images.
This number may differ from EVENTS_RECEIVED because the DPU filters
the incoming events, rejecting classes of events it recognizes as
invalid (for criteria not checked by the front-end valid event logic).
10000000
0