Van Allen Probe A EFW Filterbank Data

https://doi.org/10.48322/6a7j-p736

2022-08-18 12:34:56.789

This data set contains Level 2 filterbank data from the Electric Field and Waves Suite (EFW) onboard Van Allen Probe A. Average power and peak amplitudes from either 7 (default) or 13 logarithmically spaced band-pass filters 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 filter 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 field from sensors 1 and 2 in the spin plane is input into the first filter bank and SCMw, the spin axis component of the search coil magnetic field, serves as input into the second filter bank. The broadband filters 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).

NASA Space Physics Data Facility (SPDF) CDAWeb.

spase://VSPO/NumericalData/RBSP/A/EFW/L2_FBK/PT0.125S

spase://ViRBO/NumericalData/RBSP/A/EFW/L2/FBK/UTC

spase://VSPO/NumericalData/RBSP/A/EFW/L2/FBK/PT0.125S

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CDF

Please acknowledge the PI and the CDAWeb team at GSFC/SPDF.

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Text

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CSV

fbk13_fcenter

fbk13_fcenter

fbk13_fcenter

High frequency bound for the FBK 13 bins

Hz

fbk7_fcenter2

fbk7_fcenter

fbk7_fcenter2

Center frequency for the FBK 7 bins

Hz

fbk13_compno

fbk13_compno

fbk13_compno

fbk7_compno

fbk7_compno

fbk7_compno

fbk7_flow

fbk7_flow

fbk7_flow

Low frequency bound for the FBK 7 bins

fbk7_fcenter2

fbk7_fhigh

fbk7_fcenter2

High frequency bound for the FBK 7 bins

fbk13_flow

fbk13_flow

fbk13_flow

Low frequency bound for the FBK 13 bins

Hz

fbk13_fhigh

fbk13_fhigh

fbk13_fhigh

High frequency bound for the FBK 13 bins

Hz

Filterbank 13 E12DC peak values

fbk13_e12dc_pk

Filterbank 13 E12DC peak values

mV/m

Filterbank 13 E12AC peak values

fbk13_e12ac_pk

Filterbank 13 E12AC peak values

mV/m

Filterbank 13 E56DC peak values

fbk13_e56dc_pk

Filterbank 13 E56DC peak values

mV/m

Filterbank 13 E34DC peak values

fbk13_e34dc_pk

Filterbank 13 E34DC peak values

mV/m

Filterbank 13 E34AC peak values

fbk13_e34ac_pk

Filterbank 13 E34AC peak values

mV/m

Filterbank 13 E56AC peak values

fbk13_e56ac_pk

Filterbank 13 E56AC peak values

mV/m

Filterbank 13 SCMu peak values

fbk13_scmu_pk

Filterbank 13 SCMu peak values

nT

Filterbank 13 SCMv peak values

fbk13_scmv_pk

Filterbank 13 SCMv peak values

nT

Filterbank 13 SCMw peak values

fbk13_scmw_pk

Filterbank 13 SCMw peak values

nT

Filterbank 13 (v1+v2+v3+v4)/4 peak values

fbk13_v1v2v3v4_avg_pk

Filterbank 13 (v1+v2+v3+v4)/4 peak values

Volts

Filterbank 7 E12DC peak values

fbk7_e12dc_pk

Filterbank 7 E12DC peak values

mV/m

Filterbank 7 E12AC peak values

fbk7_e12ac_pk

Filterbank 7 E12AC peak values

mV/m

Filterbank 7 E34DC peak values

fbk7_e34dc_pk

Filterbank 7 E34DC peak values

mV/m

Filterbank 7 E34AC peak values

fbk7_e34ac_pk

Filterbank 7 E34AC peak values

mV/m

Filterbank 7 E56DC peak values

fbk7_e56dc_pk

Filterbank 7 E56DC peak values

mV/m

Filterbank 7 E56AC peak values

fbk7_e56ac_pk

Filterbank 7 E56AC peak values

mV/m

Filterbank 7 SCMu peak values

fbk7_scmu_pk

Filterbank 7 SCMu peak values

nT

Filterbank 7 SCMv peak values

fbk7_scmv_pk

Filterbank 7 SCMv peak values

nT

Filterbank 7 SCMw peak values

fbk7_scmw_pk

Filterbank 7 SCMw peak values

nT

Filterbank 7 (v1+v2+v3+v4)/4 peak values

fbk7_v1v2v3v4_avg_pk

Filterbank 7 (v1+v2+v3+v4)/4 peak values

Volts

Filterbank 13 E12DC average values

fbk13_e12dc_av

Filterbank 13 E12DC average values

mV/m

Filterbank 13 E12AC average values

fbk13_e12ac_av

Filterbank 13 E12AC average values

mV/m

Filterbank 13 E56DC average values

fbk13_e56dc_av

Filterbank 13 E56DC average values

mV/m

Filterbank 13 E34DC average values

fbk13_e34dc_av

Filterbank 13 E34DC average values

mV/m

Filterbank 13 E34AC average values

fbk13_e34ac_av

Filterbank 13 E34AC average values

mV/m

Filterbank 13 E56AC average values

fbk13_e56ac_av

Filterbank 13 E56AC average values

mV/m

Filterbank 13 SCMu average values

fbk13_scmu_av

Filterbank 13 SCMu average values

nT

Filterbank 13 SCMv average values

fbk13_scmv_av

Filterbank 13 SCMv average values

nT

Filterbank 13 SCMw average values

fbk13_scmw_av

Filterbank 13 SCMw average values

nT

Filterbank 13 (v1+v2+v3+v4)/4 average values

fbk13_v1v2v3v4_avg_av

Filterbank 13 (v1+v2+v3+v4)/4 average values

Volts

Filterbank 7 E12DC average values

fbk7_e12dc_av

Filterbank 7 E12DC average values

mV/m

Filterbank 7 E12AC average values

fbk7_e12ac_av

Filterbank 7 E12AC average values

mV/m

Filterbank 7 E34DC average values

fbk7_e34dc_av

Filterbank 7 E34DC average values

mV/m

Filterbank 7 E34AC average values

fbk7_e34ac_av

Filterbank 7 E34AC average values

mV/m

Filterbank 7 E56DC average values

fbk7_e56dc_av

Filterbank 7 E56DC average values

mV/m

Filterbank 7 E56AC average values

fbk7_e56ac_av

Filterbank 7 E56AC average values

mV/m

Filterbank 7 SCMu average values

fbk7_scmu_av

Filterbank 7 SCMu average values

nT

Filterbank 7 SCMv average values

fbk7_scmv_av

Filterbank 7 SCMv average values

nT

Filterbank 7 SCMw average values

fbk7_scmw_av

Filterbank 7 SCMw average values

nT

Filterbank 7 (v1+v2+v3+v4)/4 average values

fbk7_v1v2v3v4_avg_av

Filterbank 7 (v1+v2+v3+v4)/4 average values

Volts

Time, UTC

epoch

Time, UTC

Time tags for the survey quantities

UTC

Time, UTC

epoch_qual

Timetags for elements of efw_qual

The elements of efw_qual are determined on a fixed cadence regardless of the nominal cadence of the individual L2 data products, and epoch_qual provides storage for those fixed-cadence time tags..

UTC

EFW Data Quality Flags

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..

The quality of EFW data products can be affected by a variety of observatory and instrument-level conditions. efw_qual is a collection of flags that show the estimate of each of these contributors over time. ..See the EFW-FAQ (http://rbsp.space.umn.edu/efw_faq.html) for a detailed description of the determination and meaning of each of the elements of efw_qual...If the value of a particular element of efw_qual is not relevant to the quality of a particular data product, it shall receive the value EFW_QUAL_NR (typ. -2)...If the value of a particular element of efw_qual is relevant to the quality of a particular data product but is not known at the time lf L2 data production, it shall receive the value EFW_QUAL_UNK (typ. -1)...A quality value of EFW_QUAL_GOOD (typ. 0) indicates that there are no known issues with the data product due to that particular element of efw_qual...The quality values are meant to be conservative, and values other than EFW_QUAL_GOOD should lead the user back to a member of the EFW instrument team for discussion and advice on the nature of the data quality as needed.

EFW Quality Flags Components

efw_qual_compno

Component numbers for EFW data quality flags, efw_qual.

none.