This data set contains Level 2 filterbank data from the Electric Field and Waves Suite (EFW) onboard Van Allen Probe B. Average power and peak amplitudes from either 7 (default) or 13 logarithmically spaced band-pass ï¬lters are measured between 0.8 Hz and 6.5 kHz sampled at a cadence of 8 samples/s. Two sources may be input into the ï¬lter banks at any one time. The possible sources include:.E12DC,E34DC,E56DC,.E12AC,E34AC,E56AC,.SCMU,SCMV,SCMW.(V1DC+V2DC+V3DC+V4DC)/4. In the default mode, V12ac, the AC coupled measurement of the electric ï¬eld from sensors 1 and 2 in the spin plane is input into the first ï¬lter bank and SCMw, the spin axis component of the search coil magnetic ï¬eld, serves as input into the second ï¬lter bank. The broadband ï¬lters provide a continuous stream of survey mode measurements over the entire orbit providing information on rapid time variations and bursty wave activity over a broad frequency spectrum. These measurements are also used as an input to burst trigger algorithms.
All these quantities, the nature of the on board signal processing, their filtering, time resolution and their respective coordinate systems are described in the EFW instrument paper (Wygant et al. 2013).
Version:2.2.9
This data set contains Level 2 filterbank data from the Electric Field and Waves Suite (EFW) onboard Van Allen Probe B. Average power and peak amplitudes from either 7 (default) or 13 logarithmically spaced band-pass ï¬lters are measured between 0.8 Hz and 6.5 kHz sampled at a cadence of 8 samples/s. Two sources may be input into the ï¬lter banks at any one time. The possible sources include:.E12DC,E34DC,E56DC,.E12AC,E34AC,E56AC,.SCMU,SCMV,SCMW.(V1DC+V2DC+V3DC+V4DC)/4. In the default mode, V12ac, the AC coupled measurement of the electric ï¬eld from sensors 1 and 2 in the spin plane is input into the first ï¬lter bank and SCMw, the spin axis component of the search coil magnetic ï¬eld, serves as input into the second ï¬lter bank. The broadband ï¬lters provide a continuous stream of survey mode measurements over the entire orbit providing information on rapid time variations and bursty wave activity over a broad frequency spectrum. These measurements are also used as an input to burst trigger algorithms.
All these quantities, the nature of the on board signal processing, their filtering, time resolution and their respective coordinate systems are described in the EFW instrument paper (Wygant et al. 2013).
| Role | Person | |
|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/John.R.Wygant |
| 2. | GeneralContact | spase://SMWG/Person/Robert.E.McGuire |
EFW Data Required Reading
Science Gateway (including Mission Rules of the Road for Data Usage)
In CDF via ftp from CDAWeb
In CDF via HTTP from SPDF
fbk13_fcenter
fbk7_fcenter2
fbk13_compno
fbk7_compno
fbk7_flow
fbk7_fcenter2
fbk13_flow
fbk13_fhigh
Filterbank 13 E12DC peak values
Filterbank 13 E12AC peak values
Filterbank 13 E56DC peak values
Filterbank 13 E34DC peak values
Filterbank 13 E34AC peak values
Filterbank 13 E56AC peak values
Filterbank 13 SCMu peak values
Filterbank 13 SCMv peak values
Filterbank 13 SCMw peak values
Filterbank 13 (v1+v2+v3+v4)/4 peak values
Filterbank 7 E12DC peak values
Filterbank 7 E12AC peak values
Filterbank 7 E34DC peak values
Filterbank 7 E34AC peak values
Filterbank 7 E56DC peak values
Filterbank 7 E56AC peak values
Filterbank 7 SCMu peak values
Filterbank 7 SCMv peak values
Filterbank 7 SCMw peak values
Filterbank 7 (v1+v2+v3+v4)/4 peak values
Filterbank 13 E12DC average values
Filterbank 13 E12AC average values
Filterbank 13 E56DC average values
Filterbank 13 E34DC average values
Filterbank 13 E34AC average values
Filterbank 13 E56AC average values
Filterbank 13 SCMu average values
Filterbank 13 SCMv average values
Filterbank 13 SCMw average values
Filterbank 13 (v1+v2+v3+v4)/4 average values
Filterbank 7 E12DC average values
Filterbank 7 E12AC average values
Filterbank 7 E34DC average values
Filterbank 7 E34AC average values
Filterbank 7 E56DC average values
Filterbank 7 E56AC average values
Filterbank 7 SCMu average values
Filterbank 7 SCMv average values
Filterbank 7 SCMw average values
Filterbank 7 (v1+v2+v3+v4)/4 average values
Time, UTC
Timetags for elements of efw_qual
An array that indicates a global estimate of EFW data quality, as well as a breakdown of observatory and instrument-level data quality issues that impact the global quality estimate..
Component numbers for EFW data quality flags, efw_qual.