urn:nasa:pds:cassini-mimi-lemms-raw:data-fine-accumulation-rates:lfrt_2017081 1.0 1.20.0.0 Product_Observational Manweiler, Jerry 2024 LEMMS MIMI This file contains Cassini Magnetospheric Imaging Instrument (MIMI) Low Energy Magnetospheric Measurement System (LEMMS) raw microsector accumulations data for 2017-03-22T00:00:00.000Z to 2017-03-22T23:59:59.000Z during the Extended-Extended Mission. 2024-01-17 1.0 This product, LFRT6_2017081_0004.CSV, was originally released as part of the PDS3 CO-E/J/S/SW-MIMI-2-LEMMS-UNCALIB-V1.1 data set. The metadata have been migrated to PDS4. The data themselves are unchanged. 2017-03-22T00:00:00.000Z 2017-03-22T23:59:59.000Z Science Raw Cassini MIMI LEMMS Raw Fine Accumulation Rate Extended-Extended Mission Data Heliosphere Magnetosphere Particles Ions Energetic Heliosphere Magnetosphere Particles Electrons Energetic Cassini-Huygens Mission urn:nasa:pds:context:investigation:mission.cassini-huygens data_to_investigation Cassini Orbiter Host urn:nasa:pds:context:instrument_host:spacecraft.co is_instrument_host Magnetospheric Imaging Instrument for Cassini Orbiter Instrument urn:nasa:pds:context:instrument:mimi.co is_instrument MIMI Low Energy Magnetospheric Measurement Sensor for Cassini Orbiter Instrument urn:nasa:pds:context:instrument:mimi-lemms.co is_instrument Saturn Planet urn:nasa:pds:context:target:planet.saturn data_to_target Extended-Extended Mission 1868836090.063 1868922494.160 1 266 266 30 160 Ions Counts 15 1000 Electrons Counts urn:nasa:pds:cassini-mimi-lemms-raw:geometry:lemms_geometry data_to_geometry urn:nasa:pds:cassini-mimi:calib-raw:mimi_calibration::1.0 data_to_calibration_product urn:nasa:pds:cassini-mimi:data-ancillary::1.0 data_to_ancillary_data urn:nasa:pds:cassini-mimi:data-ancillary:mimi_datagaps_2017::1.0 data_to_ancillary_data urn:nasa:pds:cassini-mimi:data-ancillary:mimi_hskp_datagaps_2017::1.0 data_to_ancillary_data urn:nasa:pds:cassini-mimi:data-ancillary:mimi_spin_2017::1.0 data_to_ancillary_data urn:nasa:pds:cassini-mimi:spice-mk:mimi data_to_spice_kernel CO-E/J/S/SW-MIMI-2-LEMMS-UNCALIB-V1.1:LFRT6_2017081_0004:LFRT6_2017081_0004.CSV data_to_raw_source_product 10.17189/1519598 PDS Planetary Plasma Interactions Node This is the first version converted to PDS4. The DOI references the source PDS3 data set. LFRT6_2017081_0004.CSV 2018-12-26T23:02:02 24053002 25c13ae1ff6b30344f7120ee9124721d

Cassini MIMI LEMMS Fine Accumulation Rate Header 0 1072 PDS DSV 1 This file contains multiple rows of information: Row 1 - Column headings as comma separated (CS) double quoted strings. Row 2 - Valid minimum values for each of the data columns (CS). Row 3 - Valid maximum values for each of the data columns (CS). Row 4 - Actual minimum values for each of the data columns (CS). Row 5 - Actual maximum values for each of the data columns (CS). Row 6 - Mean value of all data within each column (CS). Row 7 - Standard Deviation of all data within each column (CS).

Cassini MIMI LEMMS Raw Fine Accumulation Rate Data for 2017-03-22 1072 PDS DSV 1 152168 Carriage-Return Line-Feed Comma 24 0 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_Date_Time_DOY 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 seconds The J2000 ephemeris time in seconds at the beginning of the time period for this record. 757339265 -71063936 End_Ephemeris_S 5 ASCII_Real 20 seconds The J2000 ephemeris time in seconds at the end of the time period for this record. 757339265 -71063936 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 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 seconds 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 680 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 Microsector 14 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. 15 0 A0 15 ASCII_Integer 10 This field contains the counts sampled by the indicated LEMMS channel over the duration derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). 2000000 0 A1 16 ASCII_Integer 10 This field contains the counts sampled by the indicated LEMMS channel over the duration derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). 2000000 0 C1 17 ASCII_Integer 10 This field contains the counts sampled by the indicated LEMMS channel over the duration derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). 2000000 0 C5 18 ASCII_Integer 10 This field contains the counts sampled by the indicated LEMMS channel over the duration derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). 2000000 0 E4 19 ASCII_Integer 10 This field contains the counts sampled by the indicated LEMMS channel over the duration derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). 2000000 0 P2 20 ASCII_Integer 10 This field contains the counts sampled by the indicated LEMMS channel over the duration derived from either the END_EPHEMERIS_S - START_EPHEMERIS_S or else START_EPHEMERIS_S (of the next contiguous record) - START_EPHEMERIS_S (of this record). 2000000 0 Center_Look_Angle_Degrees 21 ASCII_Real 20 degrees The angle in degrees of the LEMMS detector with the -z axis of the spacecraft, measured counter-clockwise about the y axis of the spacecraft. 360 0 Lemms_Sun_Angle 22 ASCII_Real 20 degrees The angle between the LEMMS Low Energy Telescope (LET) boresight and the spacecraft-to-Sun vector. This angle is calculated at the midpoint in time of the measurement and is useful in understanding when data corruption occurs due to light contamination from Solar UV radiation, which can cause spurious increases in the counting rates of the LET and High Energy Telescope (HET) of LEMMS. 180.000 -179.999 Lemms_Sun_Angle_Phi 23 ASCII_Real 20 degrees This field represents the angle between the spacecraft-to-Sun vector projected into the spacecraft X-Z plane and the boresight of the LEMMS Low Energy Telescope (LET). Let the X-Z projection of the spacecraft-to-Sun vector be Vproj, and then compute for Vproj a rotation angle away from the spacecraft -Z axis (in the same way the field 77, the CENTER_LOOK_ANGLE_DEGREES, is computed), and then LEMMS_SUN_ANGLE_PHI is Q minus CENTER_LOOK_ANGLE_DEGREES. This angle is calculated at the midpoint in time of the measurement and is useful in understanding when data corruption occurs due to light contamination from Solar UV radiation, which can cause spurious increases in the counting rates of the LET and High Energy Telescope (HET) of LEMMS. 180.000 -179.999 Lemms_Sun_Angle_Theta 24 ASCII_Real 20 degrees This field represents the angle between the spacecraft-to-Sun vector and the spacecraft X-Z plane. This angle is calculated at the midpoint in time of the measurement and is useful in understanding when data corruption occurs due to light contamination from Solar UV radiation, which can cause spurious increases in the counting rates of the LET and High Energy Telescope (HET) of LEMMS. 180.000 -179.999