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FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
PSP FIELDS Digital Fields Board (DFB) DC-coupled Differential Voltage, V1-V2 Antennae, Dipole Mode, Spectra, High Gain, Sensor coordinates, Level 2 (L2), 6.99054 s Data
var authors='Bale, Stuart D; Malaspina, David M; Goodrich, Katherine A; Pulupa, Marc; Quinn, Timothy; Schroeder, Peter';
document.write(authors);
(2020).
PSP FIELDS Digital Fields Board (DFB) DC-coupled Differential Voltage, V1-V2 Antennae, Dipole Mode, Spectra, High Gain, Sensor coordinates, Level 2 (L2), 6.99054 s Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/zqz0-3j38. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/ParkerSolarProbe/FIELDS/DFB/Level2/DC/Spectra/DV12/HighGain/PT6.99054S
Description
PSP FIELDS Digital Fields Board, DFB, dV12hg data:
The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft, see reference [1] below. For a full description of the FIELDS experiment, see reference [2]. For a description of the DFB, see reference [3].
DFB DC spectra data consist of power spectral densities as a function of frequency and time. These spectra are averaged over both frequency and time as described in [3]. The spectra have pseudo-logarithmically spaced frequency bins with the bin central frequencies reported in the metadata.
The Level 2 data products contained in this data file have been calibrated for:
* 1) The Hanning window used in the spectral calculation
* 2) DFB in-band gain
* 3) DFB analog filter gain response
* 4) DFB digital filter gain response
* 5) The search coil preamplifier response, when applicable
* 6) The bandwidth of each spectral bin
Note that compensation for the DFB digital filters will introduce a non-physical positively sloped power trend at high frequencies when the non-corrected signal is dominated by noise. This effect should be examined carefully when determining spectral slopes and features at the highest frequencies. Calibrations for the FIELDS preamplifiers have not been implemented as the preamplifier response is flat and equal to one through the DFB frequency range. Corrections for plasma sheath impedance gain and antenna effective length have not been applied to voltage sensor signals. These corrections will be applied in the Level 3 DFB data products. Therefore, all voltage sensor quantities when present in these Level 2 data products are expressed by using units of Volts squared per Hertz. Likewise, all magnetic field quantities when present in these Level 2 data product are expressed by using units of nanoTesla squared per Hertz.
The Level 2 data products contained in this data file are expressed in sensor coordinates: e.g. dV12, dV34 for voltage measurements. For solar orbits 1 and 2, the search coil magnetometer spectral data are rotated into a non-intuitive coordinate system with components [d,e,f]. For solar orbits 3 and beyond, the magnetic field spectral data are in expressed in search coil magnetometer sensor coordinates with components [u,v,w].
To rotate from [d,e,f] coordinates into [u,v,w] search coil sensor coordinates, use the following matrix, written in IDL notation, and the following equation: spectra_uvw_vector = R ## spectra_def_vector.
R = [[ 0.46834856, -0.81336422 , 0.34509170]
[ -0.66921924, -0.071546954, 0.73961249]
[ -0.57688408, -0.57733845 , -0.57782790]]
The time resolution of the DFB DC spectral data can vary by multiples of 2^N. During encounter when PSP is within 0.25 AU of the Sun, the DFB DC spectra data cadence is typically 30 NYseconds NYsecond [2]. Timestamps correspond to the center time of each window.
References:
* 1) Fox, N.J., Velli, M.C., Bale, S.D. et al., Space Sci Rev (2016) 204:7. https://doi.org/10.1007/s1121401502116
* 2) Bale, S.D., Goetz, K., Harvey, P.R. et al., Space Sci Rev (2016) 204:49. https://doi.org/10.1007/s1121401602445
* 3) Malaspina, D.M., Ergun, R.E., Bolton, M. et al., JGR Space Physics (2016), 121, 5088-5096. https://doi.org/10.1002/2016JA022344
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Edit
Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/ParkerSolarProbe/FIELDS/DFB/Level2/DC/Spectra/DV12/HighGain/PT6.99054S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
PSP FIELDS Digital Fields Board (DFB) DC-coupled Differential Voltage, V1-V2 Antennae, Dipole Mode, Spectra, High Gain, Sensor coordinates, Level 2 (L2), 6.99054 s Data
DOI
https://doi.org/10.48322/zqz0-3j38
ReleaseDate
2026-06-26 13:25:42Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-05-08 21:30:02Z
Note
PSP FIELDS: Initial SPASE XML resource description submission, metadata generated by LFB
RevisionEvent
ReleaseDate
2022-05-25 12:34:56.789Z
Note
PSP FIELDS: Updated to SPASE Version 2.4.0, FIELDS data release InformationURLs added, FIELDS data quality flag definition updated, metadata generated by LFB
RevisionEvent
ReleaseDate
2025-10-03 10:41:17Z
Note
Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:30:18Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:25:42Z
Note
Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate. ZCB
Description
PSP FIELDS Digital Fields Board, DFB, dV12hg data:
The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft, see reference [1] below. For a full description of the FIELDS experiment, see reference [2]. For a description of the DFB, see reference [3].
DFB DC spectra data consist of power spectral densities as a function of frequency and time. These spectra are averaged over both frequency and time as described in [3]. The spectra have pseudo-logarithmically spaced frequency bins with the bin central frequencies reported in the metadata.
The Level 2 data products contained in this data file have been calibrated for:
* 1) The Hanning window used in the spectral calculation
* 2) DFB in-band gain
* 3) DFB analog filter gain response
* 4) DFB digital filter gain response
* 5) The search coil preamplifier response, when applicable
* 6) The bandwidth of each spectral bin
Note that compensation for the DFB digital filters will introduce a non-physical positively sloped power trend at high frequencies when the non-corrected signal is dominated by noise. This effect should be examined carefully when determining spectral slopes and features at the highest frequencies. Calibrations for the FIELDS preamplifiers have not been implemented as the preamplifier response is flat and equal to one through the DFB frequency range. Corrections for plasma sheath impedance gain and antenna effective length have not been applied to voltage sensor signals. These corrections will be applied in the Level 3 DFB data products. Therefore, all voltage sensor quantities when present in these Level 2 data products are expressed by using units of Volts squared per Hertz. Likewise, all magnetic field quantities when present in these Level 2 data product are expressed by using units of nanoTesla squared per Hertz.
The Level 2 data products contained in this data file are expressed in sensor coordinates: e.g. dV12, dV34 for voltage measurements. For solar orbits 1 and 2, the search coil magnetometer spectral data are rotated into a non-intuitive coordinate system with components [d,e,f]. For solar orbits 3 and beyond, the magnetic field spectral data are in expressed in search coil magnetometer sensor coordinates with components [u,v,w].
To rotate from [d,e,f] coordinates into [u,v,w] search coil sensor coordinates, use the following matrix, written in IDL notation, and the following equation: spectra_uvw_vector = R ## spectra_def_vector.
R = [[ 0.46834856, -0.81336422 , 0.34509170]
[ -0.66921924, -0.071546954, 0.73961249]
[ -0.57688408, -0.57733845 , -0.57782790]]
The time resolution of the DFB DC spectral data can vary by multiples of 2^N. During encounter when PSP is within 0.25 AU of the Sun, the DFB DC spectra data cadence is typically 30 NYseconds NYsecond [2]. Timestamps correspond to the center time of each window.
References:
* 1) Fox, N.J., Velli, M.C., Bale, S.D. et al., Space Sci Rev (2016) 204:7. https://doi.org/10.1007/s1121401502116
* 2) Bale, S.D., Goetz, K., Harvey, P.R. et al., Space Sci Rev (2016) 204:49. https://doi.org/10.1007/s1121401602445
* 3) Malaspina, D.M., Ergun, R.E., Bolton, M. et al., JGR Space Physics (2016), 121, 5088-5096. https://doi.org/10.1002/2016JA022344
Acknowledgement
Please acknowledge S.D. Bale for use of the Data
PublicationInfo
Authors
Bale, Stuart D; Malaspina, David M; Goodrich, Katherine A; Pulupa, Marc; Quinn, Timothy; Schroeder, Peter
PublicationDate
2020-01-01 00:00:00Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Stuart.D.Bale
2.
MetadataContact
spase://SMWG/Person/Robert.M.Candey
3.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
PSP FIELDS Instrument Suite, Space Science Review Publication
URL
https://doi.org/10.1007/s11214-016-0244-5
Description
Parker Solar Probe, PSP, FIELDS Instrument Suite Description: Bale, S.D., Goetz, K., Harvey, P.R. et al., The FIELDS Instrument Suite for Solar Probe Plus, Space Sci Rev 204, 49-82 (2016)
InformationURL
Name
PSP FIELDS Instrument Suite, Digital Fields Board, JGR Space Physics Publication
URL
https://doi.org/10.1002/2016JA022344
Description
Parker Solar Probe, PSP, FIELDS Instrument Suite, Digital Fields Board, DFB, Description: Malaspina, D.M., Ergun, R.E., Bolton, M. et al., The Digital Fields Board for the FIELDS Instrument Suite on the Solar Probe Plus Mission: Analog and Digital signal Processing, JGR Space Physics, 121, 5088-5096 (2016)
InformationURL
Name
PSP FIELDS Instrument Suite, Data Description, SOC Web Site, UC Berkeley
URL
https://fields.ssl.berkeley.edu/data/
Description
Parker Solar Probe, PSP, FIELDS Instrument Suite, Data Description and Access, Spacecraft Operations Center, SOC, Web Site, UC Berkeley
InformationURL
Name
PSP FIELDS Instrument Suite, Rules of the Road, SOC Web Site, UC Berkeley
URL
https://fields.ssl.berkeley.edu/rules/
Description
Parker Solar Probe, PSP, FIELDS Instrument Suite, Rules of the Road, Spacecraft Operations Center, SOC, Web Site, UC Berkeley
InformationURL
Name
PSP Mission Overview, APL, JHU
URL
http://parkersolarprobe.jhuapl.edu/The-Mission/index.php
Description
Parker Solar Probe, PSP, Mission Overview, hosted by the Applied Physics Laboratory, Johns Hopkins University
InformationURL
Name
Release notes for PSP/FIELDS data release 5.1
URL
https://fields.ssl.berkeley.edu/2020/10/release-notes-for-psp-fields-release-5-1/
Description
PSP/FIELDS data release 5.1, on October 19, 2020, updates the dfb_dbm_scm and dfb_wf_dvdc data types to version 3. The new data versions contain significant corrections to the previously released data.
InformationURL
Name
Release notes for PSP/FIELDS data release 7
URL
https://fields.ssl.berkeley.edu/2021/04/release-notes-for-psp-fields-data-release-7/
Description
PSP/FIELDS data release 7, on April 4, 2021, includes data from PSP Encounter 6 (September 2020). All data up to and including December 2020 are now publicly available. For this data release, all DFB cross spectra have been reprocessed (with a new version number), and a subset of MAG data has also been reprocessed (with a new version number).
InformationURL
Name
Release notes for PSP/FIELDS data release 8
URL
https://fields.ssl.berkeley.edu/2021/06/release-notes-for-psp-fields-data-release-8/
Description
PSP/FIELDS data release 8, on June 28, 2021, includes survey data from PSP Encounter 7 and Venus Gravity assist 4. Several data sets have been updated in release 8.
InformationURL
Name
Release notes for PSP/FIELDS data release 9
URL
https://fields.ssl.berkeley.edu/2021/10/release-notes-for-psp-fields-data-release-9/
Description
PSP/FIELDS Data Release 9, on October 29, 2021, includes select data from Encounter 7 (perihelion January 2021), and survey and select data from Encounter 8 (perihelion April 2021).
InformationURL
Name
Release notes for PSP/FIELDS data release 10
URL
https://fields.ssl.berkeley.edu/2022/02/release-notes-for-psp-fields-data-release-10/
Description
PSP/FIELDS Data Release 10, on February 7, 2022, includes survey and select data from Encounter 9 (perihelion August 2021).
InformationURL
Name
Release notes for PSP/FIELDS data release 11
URL
https://fields.ssl.berkeley.edu/2022/04/release-notes-for-psp-fields-data-release-11/
Description
PSP/FIELDS Data Release 11, on April 25, 2022, includes survey and select data from Encounter 10 (perihelion November 2021), and survey and select data from Venus Gravity Assist 5 (October 2021).
PriorIDs
spase://VSPO/NumericalData/ParkerSolarProbe/FIELDS/DFB/Level2/DC/Spectra/DV12/HighGain/PT6.99054S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/psp/fields/l2/dfb_dc_spec/dv12hg/
Description
Access to Data in CDF Format via ftp from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/psp/fields/l2/dfb_dc_spec/dv12hg/
Description
Access to Data in CDF Format via http from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PSP_FLD_L2_DFB_DC_SPEC_DV12HG&index=sp_phys
ProductKey
PSP_FLD_L2_DFB_DC_SPEC_DV12HG
Description
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/psp/fields/l2/dfb_dc_spec/dv12hg/$Y
AccessFilenameTemplate
psp_fld_l2_dfb_dc_spec_dv12hg_$Y$m$d_$v.cdf
Acknowledgement
Please acknowledge S.D. Bale. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/PSP_FLD_L2_DFB_DC_SPEC_DV12HG/clientLibraryExample/
Style
WebService
ProductKey
PSP_FLD_L2_DFB_DC_SPEC_DV12HG
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Please acknowledge S.D. Bale. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
PSP_FLD_L2_DFB_DC_SPEC_DV12HG
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Please acknowledge S.D. Bale. Please acknowledge the Data Providers and CDAWeb when using these Data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/ParkerSolarProbe/FIELDS/DFB
spase://SMWG/Instrument/ParkerSolarProbe/FIELDS/V1
spase://SMWG/Instrument/ParkerSolarProbe/FIELDS/V2
MeasurementType
ElectricField
MeasurementType
InstrumentStatus
TemporalDescription
TimeSpan
StartDate
2018-10-06 00:00:00.000Z
RelativeStopDate
-P6M
Cadence
PT6.99054S
ObservedRegion
Heliosphere
ObservedRegion
Heliosphere.Inner
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Sun.Corona
Parameter #1
Name
Epoch Time, TT2000, DFB, DC Differential Voltage, V1-V2, HG, Sensor coordinates Spectra
ParameterKey
epoch_dc_spec_dV12hg
Description
Epoch Time Tags in Terrestrial Time 2000, TT2000, for Digital Fields Board, DFB, DC-coupled Differential Voltage, V1-V2 Antennae, High Gain, Sensor coordinates Spectra
Caveats
This Parameter exhibits an increasing Monotonic Progression
Cadence
PT6.99054S
Units
ns
UnitsConversion
1.0e-9>s
RenderingHints
AxisLabel
epoch
ValueFormat
I22
ScaleMin
6.3705981819904e+13
ScaleMax
6.3706068219904e+13
ValidMin
2010-01-01T00:00:00.000000000
ValidMax
2050-01-01T00:00:00.000000000
FillValue
9999-12-31T23:59:59.999999999
Support
SupportQuantity
Temporal
Parameter #2
Name
DFB, Spectra, Frequency Bins for DC Differential Voltage, V1-V2, HG, Sensor coordinates
Set
Time Series defined by using: EPOCH_DC_SPEC_DV12HG
ParameterKey
psp_fld_l2_dfb_dc_spec_dV12hg_frequency_bins
Description
FIELDS Digital Fields Board, DFB, Frequency Bins for Spectra, DC-coupled Differential Voltage, V1-V2 Antennae, High Gain, Sensor coordinates
Cadence
PT6.99054S
Units
Hz
RenderingHints
AxisLabel
frequency
ValueFormat
F8.1
ScaleType
LogScale
Structure
Size
54
ValidMin
22.8882
ValidMax
4541.02
FillValue
-1.0e+31
Support
Qualifier
Array
SupportQuantity
Other
Parameter #3
Name
psp_fld_l2_dfb_dc_spec_dV12hg
Set
Time Series defined by using: EPOCH_DC_SPEC_DV12HG
ParameterKey
psp_fld_l2_dfb_dc_spec_dV12hg
Description
L2 Power Spectra for channel DV12HG
Cadence
PT6.99054S
Units
V^2/Hz
RenderingHints
DisplayType
Spectrogram
AxisLabel
PSD
ValueFormat
F12.3
ScaleType
LogScale
Structure
Size
54
ValidMin
0.0
ValidMax
122880.0
FillValue
-1.0e+31
Field
Qualifier
Array
Qualifier
CrossSpectrum
FieldQuantity
Electric
Parameter #4
Name
DFB, Spectra, Saturation Flags for DC Differential Voltage, V1-V2, HG, Sensor coordinates
Set
Time Series defined by using: EPOCH_DC_SPEC_DV12HG
ParameterKey
psp_fld_l2_dfb_dc_spec_dV12hg_saturation_flags
Description
FIELDS Digital Fields Board, DFB, Saturation Flags for Spectra, DC-coupled Spectra, Differential Voltage, V1-V2 Antennae, High Gain, Sensor coordinates
Caveats
FIELDS Level 2 DFB Saturation Flag Values: 0=Spectra unsaturated, 1=Spectra saturated
Cadence
PT6.99054S
RenderingHints
DisplayType
TimeSeries
ValueFormat
I8
ScaleType
LinearScale
ValidMin
0
ValidMax
1
FillValue
-32768
Support
Qualifier
Scalar
SupportQuantity
InstrumentMode
Parameter #5
Name
Epoch Time, TT2000, FIELDS Data Quality Flags
ParameterKey
epoch_quality_flags
Description
Epoch Time Tags in Terrestrial Time 2000, TT2000, for FIELDS Instrument Suite Data Quality Flags
Caveats
This Parameter exhibits an increasing Monotonic Progression
Cadence
PT6.99054S
Units
ns
UnitsConversion
1.0e-9>s
RenderingHints
AxisLabel
epoch
ValueFormat
I22
ScaleMin
6.3705981819904e+13
ScaleMax
6.3706068219904e+13
ValidMin
2010-01-01T00:00:00.000000000
ValidMax
2050-01-01T00:00:00.000000000
FillValue
9999-12-31T23:59:59.999999999
Support
SupportQuantity
Temporal
Parameter #6
Name
FIELDS Data Quality Flags
Set
Time Series defined by using: EPOCH_QUALITY_FLAGS
ParameterKey
psp_fld_l2_quality_flags
Description
FIELDS Instrument Suite Data Quality Flags
Caveats
FIELDS quality flags: These flags are bitwise variables, meaning that multiple flags can be set simultaneously for a single time by adding flag values. Current flagged values are:
* 1: FIELDS Antenna Bias Sweep
* 2: PSP Thruster Firing
* 4: SCM Calibration
* 8: PSP Rotations for MAG Calibration, MAG Rolls
* 16: FIELDS MAG Calibration Sequence
* 32: SWEAP SPC in Electron Mode
* 64: PSP Solar Limb Sensor, SLS, Test
* 128: PSP Spacecraft is off Umbra Pointing, Heat Shield not pointed Sunward
* 256: High Frequency Noise affecting RFS and TDS Receivers
* 512: Antennas driven towards the FIELDS Power Supply Rails
A value of zero corresponds to no set flags. Not all flags are relevant to all FIELDS data products, refer to notes in the CDF metadata and on the FIELDS Satellite Operations Center, SOC, website for information on how the various flags impact FIELDS data. For more information on the quality flags describing high frequency noise and antennas driven to the rails, see release notes for PSP/FIELDS releases 8 and 9. Additional flagged items may be added in the future.
Cadence
PT6.99054S
RenderingHints
AxisLabel
flag
ValueFormat
I10
ValidMin
0
ValidMax
1023
FillValue
4294967295
Support
Qualifier
Scalar
SupportQuantity
InstrumentMode