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Proton-Contaminated Alpha Differential Energy Flux measured by the PSP SPAN-Ion Instrument

(2020). Proton-Contaminated Alpha Differential Energy Flux measured by the PSP SPAN-Ion Instrument. [Data set]. Space Physics Data Facility. https://doi.org/10.48322/7mn4-wj46. Accessed on .

Note: Proper references, including or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/ParkerSolarProbe/SWEAP/SPAN-I/Level2/AlphaDifferentialEnergyFlux/VariableCadence

Description
Parker Solar Probe SPAN-I Alpha particle differential energy flux (contaminated by Protons) dataset covers 8 defector settings, 32 energies, and 8 angles. The log spaced energy range covers 21.0 eV to 17.6 keV. The field of view covers the entire sky except for the region obscured by the heat shield. Due to heat shield, the centroid of the solar wind alpha particle distribution is typically only observed around perihelion. The mode of the cadence is about 3.5 seconds, with smaller cadence of about 1.7 seconds around perihelion.

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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Details

Version:2.7.1

NumericalData

ResourceID
spase://NASA/NumericalData/ParkerSolarProbe/SWEAP/SPAN-I/Level2/AlphaDifferentialEnergyFlux/VariableCadence
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Proton-Contaminated Alpha Differential Energy Flux measured by the PSP SPAN-Ion Instrument
DOI
https://doi.org/10.48322/7mn4-wj46
ReleaseDate
2025-12-04 13:30:49Z
RevisionHistory
RevisionEvent
ReleaseDate
2023-08-31 12:34:56.789Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2024-07-17 09:41:29.311Z
Note
Initial SPASE XML resource description submission, metadata generated by SAB
RevisionEvent
ReleaseDate
2025-06-11 09:41:29.311Z
Note
Fixed Authors, Contacts, Acknowledgement ,SAB
RevisionEvent
ReleaseDate
2025-09-18 11:27:06Z
Note
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
2025-10-03 10:48:40Z
Note
Updated PublishedBy name to match ROR Registry. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:30:49Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
Parker Solar Probe SPAN-I Alpha particle differential energy flux (contaminated by Protons) dataset covers 8 defector settings, 32 energies, and 8 angles. The log spaced energy range covers 21.0 eV to 17.6 keV. The field of view covers the entire sky except for the region obscured by the heat shield. Due to heat shield, the centroid of the solar wind alpha particle distribution is typically only observed around perihelion. The mode of the cadence is about 3.5 seconds, with smaller cadence of about 1.7 seconds around perihelion.
Acknowledgement
Please acknowledge the Principal Investigator Michael Louis Stevens for use of the Data
PublicationInfo
Authors
Livi, Roberto; Larson, Davin E.; Rahmati, Ali
PublicationDate
2020-01-01 00:00:00
PublishedBy
Space Physics Data Facility
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/Michael.Louis.Stevens
2. HostContact spase://SMWG/Person/Davin.Larson
3. MetadataContact spase://SMWG/Person/Robert.M.Candey
4. MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze

InformationURL
Name
Instrument Paper
URL
https://link.springer.com/article/10.1007/s11214-015-0206-3
Description
SWEAP
Language
en
InformationURL
Name
Link to Data Guide and other information
URL
https://sweap.cfa.harvard.edu/Data.html
Description
Smithsonian Astrophysical Observatory SWEAP
Language
en
InformationURL
Name
Data Guide
URL
https://sweap.cfa.harvard.edu/sweap_data_user_guide.pdf
Description
Smithsonian Astrophysical Observatory SWEAP
Language
en
InformationURL
Name
Michael D. McManus et al 2022 ApJ 933 43 DOI 10.3847/1538-4357/ac6ba3
URL
https://doi.org/10.3847/1538-4357/ac6ba3
Description
Includes a Brief Note on Proton Contanimation Removal
Language
en
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/sweap/spi/l2/spi_sf01_8dx32ex8a
Description
Access to Data in CDF Format via ftps from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/psp/sweap/spi/l2/spi_sf01_8dx32ex8a
Description
Access to Data in CDF Format via https from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PSP_SWP_SPI_SF01_L2_8DX32EX8A&index=sp_phys
ProductKey
PSP_SWP_SPI_SF01_L2_8DX32EX8A
Description
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/psp/sweap/spi/l2/spi_sf01_8dx32ex8a/$Y
AccessFilenameTemplate
psp_swp_spi_sf01_l2_8dx32ex8a_$Y$m$d_$v.cdf
Acknowledgement
Please acknowledge the Principal Investigator . 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_SWP_SPI_SF01_L2_8DX32EX8A/clientLibraryExample/
Style
WebService
ProductKey
PSP_SWP_SPI_SF01_L2_8DX32EX8A
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Please acknowledge the Principal Investigator . 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_SWP_SPI_SF01_L2_8DX32EX8A
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Please acknowledge the Principal Investigator . Please acknowledge the Data Providers and CDAWeb when using these Data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/ParkerSolarProbe/SWEAP/SPAN-A
MeasurementType
EnergeticParticles
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
2018-10-02 04:04:15.000Z
RelativeStopDate
-P2M
ObservedRegion
Heliosphere
ObservedRegion
Heliosphere.Inner
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Sun.Corona
Parameter #1
Name
Time in TT2000 format
Set
Time series defined by using: Epoch
ParameterKey
Epoch
Description
Time at middle of sample
Caveats
This Parameter exhibits an increasing Monotonic Progression
Units
ns
UnitsConversion
1.0e-9>s
RenderingHints
DisplayType
TimeSeries
AxisLabel
Epoch
ValueFormat
F24.1
ScaleType
LinearScale
ValidMin
1990-01-01T00:00:00.000000000
ValidMax
2029-12-31T23:59:58.999000000
FillValue
9999-12-31T23:59:59.999999999
Support
SupportQuantity
Temporal
Parameter #2
Name
Time in UTC format
Set
Time series defined by using: Epoch
ParameterKey
TIME
Description
Time at middle of sample, unix time
Caveats
This Parameter exhibits an increasing Monotonic Progression
Units
s
RenderingHints
DisplayType
TimeSeries
AxisLabel
Unix Time
ValueFormat
F24.7
ScaleType
LinearScale
ValidMin
1.2623e+09
ValidMax
4.10244e+09
FillValue
nan
Support
SupportQuantity
Temporal
Parameter #3
Name
MET
Set
Time series defined by using: Epoch
ParameterKey
MET
Description
MET
RenderingHints
DisplayType
TimeSeries
AxisLabel
MET
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #4
Name
APID
Set
Time series defined by using: Epoch
ParameterKey
APID
Description
APID
RenderingHints
DisplayType
TimeSeries
AxisLabel
APID
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #5
Name
SEQN
Set
Time series defined by using: Epoch
ParameterKey
SEQN
Description
SEQN
RenderingHints
DisplayType
TimeSeries
AxisLabel
SEQN
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #6
Name
SEQN_DELTA
Set
Time series defined by using: Epoch
ParameterKey
SEQN_DELTA
Description
SEQN_DELTA
RenderingHints
DisplayType
TimeSeries
AxisLabel
SEQN_DELTA
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #7
Name
SEQN_GROUP
Set
Time series defined by using: Epoch
ParameterKey
SEQN_GROUP
Description
SEQN_GROUP
RenderingHints
DisplayType
TimeSeries
AxisLabel
SEQN_GROUP
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #8
Name
PKT_SIZE
Set
Time series defined by using: Epoch
ParameterKey
PKT_SIZE
Description
PKT_SIZE
RenderingHints
DisplayType
TimeSeries
AxisLabel
PKT_SIZE
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #9
Name
SOURCE_APID
Set
Time series defined by using: Epoch
ParameterKey
SOURCE_APID
Description
SOURCE_APID
RenderingHints
DisplayType
TimeSeries
AxisLabel
SOURCE_APID
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #10
Name
SOURCE_HASH
Set
Time series defined by using: Epoch
ParameterKey
SOURCE_HASH
Description
SOURCE_HASH
RenderingHints
DisplayType
TimeSeries
AxisLabel
SOURCE_HASH
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #11
Name
COMPR_RATIO
Set
Time series defined by using: Epoch
ParameterKey
COMPR_RATIO
Description
COMPR_RATIO
RenderingHints
DisplayType
TimeSeries
AxisLabel
COMPR_RATIO
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #12
Name
NDAT
Set
Time series defined by using: Epoch
ParameterKey
NDAT
Description
NDAT
RenderingHints
DisplayType
TimeSeries
AxisLabel
NDAT
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #13
Name
DATASIZE
Set
Time series defined by using: Epoch
ParameterKey
DATASIZE
Description
DATASIZE
RenderingHints
DisplayType
TimeSeries
AxisLabel
DATASIZE
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #14
Name
LTCSNNNN_BITS
Set
Time series defined by using: Epoch
ParameterKey
LTCSNNNN_BITS
Description
LTCSNNNN_BITS
RenderingHints
DisplayType
TimeSeries
AxisLabel
LTCSNNNN_BITS
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #15
Name
ARCH_BITS
Set
Time series defined by using: Epoch
ParameterKey
ARCH_BITS
Description
ARCH_BITS
RenderingHints
DisplayType
TimeSeries
AxisLabel
ARCH_BITS
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #16
Name
MODE2_ORI
Set
Time series defined by using: Epoch
ParameterKey
MODE2_ORI
Description
MODE2_ORI
RenderingHints
DisplayType
TimeSeries
AxisLabel
MODE2_ORI
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #17
Name
MODE2
Set
Time series defined by using: Epoch
ParameterKey
MODE2
Description
MODE2
RenderingHints
DisplayType
TimeSeries
AxisLabel
MODE2
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #18
Name
F0
Set
Time series defined by using: Epoch
ParameterKey
F0
Description
F0
RenderingHints
DisplayType
TimeSeries
AxisLabel
F0
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #19
Name
STATUS_BITS
Set
Time series defined by using: Epoch
ParameterKey
STATUS_BITS
Description
STATUS_BITS
RenderingHints
DisplayType
TimeSeries
AxisLabel
STATUS_BITS
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #20
Name
PEAK_BIN
Set
Time series defined by using: Epoch
ParameterKey
PEAK_BIN
Description
PEAK_BIN
RenderingHints
DisplayType
TimeSeries
AxisLabel
PEAK_BIN
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #21
Name
PRODUCT_BITS
Set
Time series defined by using: Epoch
ParameterKey
PRODUCT_BITS
Description
PRODUCT_BITS
RenderingHints
DisplayType
TimeSeries
AxisLabel
PRODUCT_BITS
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #22
Name
NUM_TOTAL
Set
Time series defined by using: Epoch
ParameterKey
NUM_TOTAL
Description
NUM_TOTAL
RenderingHints
DisplayType
TimeSeries
AxisLabel
NUM_TOTAL
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #23
Name
NUM_ACCUM
Set
Time series defined by using: Epoch
ParameterKey
NUM_ACCUM
Description
NUM_ACCUM
RenderingHints
DisplayType
TimeSeries
AxisLabel
NUM_ACCUM
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #24
Name
TIME_TOTAL
Set
Time series defined by using: Epoch
ParameterKey
TIME_TOTAL
Description
TIME_TOTAL
RenderingHints
DisplayType
TimeSeries
AxisLabel
TIME_TOTAL
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #25
Name
TIME_ACCUM
Set
Time series defined by using: Epoch
ParameterKey
TIME_ACCUM
Description
TIME_ACCUM
RenderingHints
DisplayType
TimeSeries
AxisLabel
TIME_ACCUM
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #26
Name
CNTS
Set
Time series defined by using: Epoch
ParameterKey
CNTS
Description
CNTS
RenderingHints
DisplayType
TimeSeries
AxisLabel
CNTS
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #27
Name
DATA
Set
Time series defined by using: Epoch
ParameterKey
DATA
Description
DATA
RenderingHints
DisplayType
TimeSeries
AxisLabel
DATA
ValueFormat
I20
ScaleType
LinearScale
Structure
Size
2048
Support
SupportQuantity
Other
Parameter #28
Name
GAP
Set
Time series defined by using: Epoch
ParameterKey
GAP
Description
GAP
RenderingHints
DisplayType
TimeSeries
AxisLabel
GAP
ValueFormat
I20
ScaleType
LinearScale
Support
SupportQuantity
Other
Parameter #29
Name
Quality Flag
Set
Time series defined by using: Epoch
ParameterKey
QUALITY_FLAG
Description
Quality Flag
RenderingHints
DisplayType
TimeSeries
AxisLabel
Quality Flag
ValueFormat
I10
ScaleType
LinearScale
ValidMin
0
ValidMax
65534
FillValue
65535
Support
SupportQuantity
DataQuality
Parameter #30
Name
Eflux
Set
Time series defined by using: Epoch
ParameterKey
EFLUX
Description
Differential Energy Flux vs Energy/Angle Bin
Units
eV/cm2-s-ster-eV
RenderingHints
DisplayType
Spectrogram
AxisLabel
Diff Energy Flux
ValueFormat
E12.4
ScaleType
LogScale
Structure
Size
2048
FillValue
nan
Particle
ParticleType
AlphaParticle
ParticleQuantity
EnergyFlux
Parameter #31
Name
Energy
Set
Time series defined by using: Epoch
ParameterKey
ENERGY
Description
Energy
Units
eV
RenderingHints
DisplayType
TimeSeries
AxisLabel
Energy
ValueFormat
E12.4
ScaleType
LogScale
Structure
Size
2048
FillValue
nan
Particle
ParticleType
AlphaParticle
ParticleQuantity
Energy
Parameter #32
Name
Instrument Theta
Set
Time series defined by using: Epoch
ParameterKey
THETA
Description
Elevation Angle in instrument coordinates
Units
°
RenderingHints
DisplayType
TimeSeries
AxisLabel
Elevation Angle
ValueFormat
E12.4
ScaleType
LinearScale
Structure
Size
2048
FillValue
nan
Particle
ParticleType
AlphaParticle
ParticleQuantity
ArrivalDirection
Parameter #33
Name
Instrument Phi
Set
Time series defined by using: Epoch
ParameterKey
PHI
Description
Azimuth Angle in instrument coordinates
Units
°
RenderingHints
DisplayType
TimeSeries
AxisLabel
Azimuth Angle
ValueFormat
E12.4
ScaleType
LinearScale
Structure
Size
2048
FillValue
nan
Particle
ParticleType
AlphaParticle
ParticleQuantity
ArrivalDirection
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