Data Access
The Cassini Radio and Plasma Wave Science (RPWS) Low Rate Full Resolution Calibrated (RPWS_LOW_RATE_FULL) is a data set including all spectral density measurements acquired by the RPWS in units of electric or magnetic field spectral density. This data set includes calibrated values for each frequency channel for each sensor for all times during the mission including the two Venus flybys, the Earth flyby, the Jupiter flyby, interplanetary cruise, and the entire Saturn tour. Data for this data set are acquired from the RPWS Low Frequency Receiver (LFR), Medium Frequency Receiver (MFR), Medium Frequency Digital Receiver (MFDR) (which can be used to replace MFR band 2 data) and High Frequency Receiver (HFR). Data are presented in a set of tables organized so as to have fixed-length records for ease in data handling. This data set is intended to be the most comprehensive and complete data set included in the Cassini RPWS archive. A browse data set is included with these data which provides for a graphical search of the data using a series of thumbnail and full-sized spectrograms which lead the user to the particular data file(s) of interest. This data set should be among the first used by a user of any of the RPWS archive as it will lead one to information required to search for more detailed or highly specialized products.
Version:2.3.0
The Cassini Radio and Plasma Wave Science (RPWS) Low Rate Full Resolution Calibrated (RPWS_LOW_RATE_FULL) is a data set including all spectral density measurements acquired by the RPWS in units of electric or magnetic field spectral density. This data set includes calibrated values for each frequency channel for each sensor for all times during the mission including the two Venus flybys, the Earth flyby, the Jupiter flyby, interplanetary cruise, and the entire Saturn tour. Data for this data set are acquired from the RPWS Low Frequency Receiver (LFR), Medium Frequency Receiver (MFR), Medium Frequency Digital Receiver (MFDR) (which can be used to replace MFR band 2 data) and High Frequency Receiver (HFR). Data are presented in a set of tables organized so as to have fixed-length records for ease in data handling. This data set is intended to be the most comprehensive and complete data set included in the Cassini RPWS archive. A browse data set is included with these data which provides for a graphical search of the data using a series of thumbnail and full-sized spectrograms which lead the user to the particular data file(s) of interest. This data set should be among the first used by a user of any of the RPWS archive as it will lead one to information required to search for more detailed or highly specialized products.
Role | Person | StartDate | StopDate | Note | |
---|---|---|---|---|---|
1. | PrincipalInvestigator | spase://SMWG/Person/Donald.A.Gurnett | |||
2. | CoInvestigator | spase://SMWG/Person/William.S.Kurth | |||
3. | MetadataContact | spase://SMWG/Person/Raymond.J.Walker |
NASA's Planetary Plasma Interactions (PPI) Node of the Planetary Data System (PDS)
The Cassini RPWS Volume 172 (typical) readme file with descriptions of the data, the organization of the data within the volume and associated software
CASSINI ORBITER RADIO AND PLASMA WAVE SCIENCE
'CORPWS01' for the file id.
The length of each record in bytes.
The total number of records.
Logical RPWS Instrument ID Number.
The mini-packet header which is representative for the data contained in the file.
The standard JPL spacecraft event time description: yyyy-doyThh:mm, seconds and milliseconds are assumed zero. This is half of the SCLK/SCET pair produce by the SPICE kernel for the beginning of each day.
The standard JPL spacecraft clock time description: ssssssssss.fff. This is half of the SCLK/SCET pair produce by the SPICE kernel for the beginning of each day.
Spacecraft clock counter increments each second, beginning at approximately 1958-01-01T00:00:00Z.
Spacecraft clock partition. A value of ZERO or ONE indicates the first partition (i.e. the spacecraft clock has not been reset).
Spacecraft clock modulo 256 counter increments 256 times per second. Since the RTI increments from 0 through 7 in this same interval, SCLK_FINE / 32 yields the RTI count. For RPWS, SCLK_FINE is maintained within the instrument to an accuracy of one RTI period. Time tags should occur only with the following values for SCLK_FINE : 0, 32, 64, 96, 128, 160, 192, and 224
Spacecraft event time days since 1958-01-01T00:00:00Z
Spacecraft event time millisecond of day allowing for up to two leap seconds.
Time offset of individual samples in corresponding columns relative to time tag of each row.
Array of values
Spacecraft clock counter increments each second, beginning at approximately 1958-01-01T00:00:00Z.
Spacecraft clock partition. A value of ZERO or ONE indicates the first partition (i.e. the spacecraft clock has not been reset).
Spacecraft clock modulo 256 counter increments 256 times per second. Since the RTI increments from 0 through 7 in this same interval, SCLK_FINE / 32 yields the RTI count. For RPWS, SCLK_FINE is maintained within the instrument to an accuracy of one RTI period. Time tags should occur only with the following values for SCLK_FINE : 0, 32, 64, 96, 128, 160, 192, and 224
Spacecraft event time days since 1958-01-01T00:00:00Z
Spacecraft event time millisecond of day allowing for up to two leap seconds.
Frequency of spectral densities in corresponding columns.
Array of values
This field contains the sensor ID number and data quality status. Bits will be added as sources of interferance, telemetry errors, etc. are identified. Individual data values within a capture are marked by multiplying the original measurement by negative one.
Calibrated spectral densities from the electric antennas.
Array of values
Calibrated spectral densities from the magnetic sensors.
Array of values