RPW Data Center
solo_L3_rpw-tnr-fp
solo_L3_rpw-tnr-fp data provide local plasma frequency values, derived from plasma peak tracking on solo_L2_rpw-tnr-surv data.
DOI: https://doi.org/10.57780/esa-3xcjd4w
| Type of data | Time series |
|---|---|
| Time-dependent quantity | Local plasma frequency |
| Time-dependent units | kHz |
| Time resolution | 1s to 12s |
| Data format | CDF (3.9.0) |
| Granularity | 1 file per day |
Data organization
Table below gives the name, data type, units and description of the zVariables stored in the CDF file.
Each CDF record contains data for a given HFR frequency sweep. Epoch times correspond to the acquisition time of the first data sample in the current HFR sweep. Acquisition times for next data samples in the sweep can be computed using the offset values (in seconds) in the TIMING zVariable. Missing/bad data samples are interpolated.
In the the “TYPE” column, the expected size (i.e., number of elements along each dimension) of the zVariable for a CDF record is given between bracket (e.g., “[1]”).
Non-record-variant zVariables are indicated by a “(NRV)” additional label in the “TYPE” column.
| NAME | TYPE | UNIT | DESCRIPTION |
|---|---|---|---|
| Epoch | CDF_TIME_TT2000 [1] | ns | Epoch time of the record |
| JULIAN_DAY | CDF_REAL8[1] | JD | Julian day corresponding to Epoch |
| TIME_INTERPOL_FLAG | CDF_UINT1[1] | Flag to indicate if the current EPOCH value is computed from an interpolated time or actual time as returned in the packet (0=actual, 1=interpolated) | |
| QUALITY_FLAG | CDF_UINT1[1] | Flag to indicate the quality of the data | |
| QUALITY_BITMASK | CDF_UINT2[1] | Flag to indicate any context information or status at the receiver or experiment level | |
| SENSOR_CONFIG | CDF_UINT1[1] | THR sensor configuration | |
| PLASMA_FREQ | CDF_DOUBLE[1] | kHz | Plasma frequency value derived by the plasma peak tracking |
| QUALITY_FACTOR | CDF_DOUBLE[1] | Quality factor for the plasma frequency data | |
| QUALITY_FLAG | CDF_UINT1[1] | Flag to indicate the quality of the data | |
| QUALITY_BITMASK | CDF_UINT2[2] | Flag to indicate any context information or status at the receiver or experiment level |
Rules of use
Please read the text of the Rules_of_use global attribute in the CDF files.
See also in https://rpw-datacenter.obspm.fr/spip.php?article4.
Caveats and known issues
Table below gives the list of main known issues and the actions taken to mitigate them.
Please read the CAVEATS global attribute entries in the CDF files to be aware of the possible issues and limitations concerning data.
| ISSUE | MITIGATION(S) |
|---|---|
| RPW MY (3) electrical antenna signal was lost intermittently between November 13th and March 15th. TNR acquisitions were impacted when measurements were performed on this antenna. | Specific entry added for the global attribute CAVEATS and QUALITY_FLAG zVariable set to 1 for impacted records. |
Release notes
See MODS global attribute in the CDF files for an history of the data modifications.
Authors
Antonio Vecchio and Milan Maksimovic
References
• The Solar Orbiter Radio and Plasma Waves (RPW) instrument, Maksimovic et al., A&A, 2020 (https://doi.org/10.1051/0004-6361/201936214)
• THR-Calibration Procedures, A. Vecchio, (REF TO BE ADDED)
• Metadata Definition for Solar Orbiter Science Data, Helen R. Middleton
• RPW Data Product Description Document (DPDD)
• NASA CDF Web portal
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