PSP Solar Wind Electrons Alphas and Protons (SWEAP) SPAN-B Electron Pitch Angle Distributions, Level 3 (L3), 13.981 s Data

https://doi.org/10.48322/ccen-5a96

2021-04-27 15:38:11Z

• SPAN-Electron, SPAN-E, Instrument SPE Level 3 Data

• ---

File Naming Format: psp_swp_spb_sf0_l3_pad_YYYYMMDD_v01.cdf

This data product contains measurements of the Electron Pitch Angle Distribution from the SPAN-B instrument.

• Parker Solar Probe SWEAP Rules of the Road

• ---

As part of the development of collaboration with the broader Heliophysics community, the mission has drafted a "Rules of the Road" to govern how PSP instrument data are to be used.

• 1. Users should consult with the PI to discuss the appropriate use of instrument data or model results and to ensure that the users are accessing the most recently available versions of the data and of the analysis routines. Instrument team Science Operations Centers, SOCs, and/or Virtual Observatories, VOs, should facilitate this process serving as the contact point between PI and users in most cases.
• 2. Users should heed the caveats of investigators to the interpretations and limitations of data or model results. Investigators supplying data or models may insist that such caveats be published. Data and model version numbers should also be specified.
• 3. Browse products, Quicklook, and Planning data are not intended for science analysis or publication and should not be used for those purposes without consent of the PI.
• 4. Users should acknowledge the sources of data used in all publications, presentations, and reports: "We acknowledge the NASA Parker Solar Probe Mission and the SWEAP team led by J. Kasper for use of data.".
• 5. Users are encouraged to provide the PI a copy of each manuscript that uses the PI data prior to submission of that manuscript for consideration of publication. On publication, the citation should be transmitted to the PI and any other providers of data.

Please acknowledge the Principal Investigator J.C. Kasper for use of the Data

spase://VSPO/NumericalData/ParkerSolarProbe/SWEAP/SPAN-B/Level3/PitchAngleDistribution/PT13.981S

Online

Open

CDF

None

Please acknowledge the Principal Investigator J.C. Kasper. Please acknowledge the Data Providers and CDAWeb when using these Data.

Online

Open

CSV

Please acknowledge the Principal Investigator J.C. Kasper. Please acknowledge the Data Providers and CDAWeb when using these Data.

PT13.981S

Epoch Time, TT2000, Midpoint of Integration

Time series defined by using: EPOCH

Epoch

Epoch Time Tags, TT2000, Nanoseconds since J2000 at Midpoint of the Integration

Warning: the Epoch time typically has an irregular cadence owing to frequent changes in the operating mode. TT2000 is measured in nanoseconds from J2000 with leap seconds included. Please refer to CDF TT2000 documentation with regards to this convention. This time corresponds to the first measurement of the spectrum. In accordance with SPDF standards, this epoch is interpreted a CDF_TT2000 time. It is acknowledged here that this epoch is not strictly equal to "terrestrial time" as it is defined in the CDF_TT2000 documentation nor is the calendar date interpreted by CDF_T2000 operation performed on this epoch strictly equal to Coordinated Universal Time, UTC. This Parameter exhibits an increasing Monotonic Progression.

PT13.981S

ns

1.0e-9>s

1990-01-01T00:00:00.000000000

2029-12-31T23:59:58.999000000

9999-12-31T23:59:59.999999999

Time

Time series defined by using: EPOCH

TIME

Time

This Parameter exhibits an increasing Monotonic Progression

PT13.981S

s

1.2623e+09

4.10244e+09

nan

Parker Solar Probe, Mission Elapsed Time

Time series defined by using: EPOCH

MET

Parker Solar Probe, PSP, Mission Elapsed Time, MET, in string format

The mission elapsed time string is constructed as met_seconds+':'+met_subseconds_base50000, where: met_seconds is the CCSDS_MET value cast as an integer string with no whitespace and met_subseconds_base50000 is an "I05" format integer string formed by converting the xxx_SUBSEC value to units of 1/50000 second. For example, if the xxx_SUBSEC value is recorded in parts per 65536 o second, the correct procedure would be to round 50000*(xxx_SUBSEC/65536) to the nearest integer and cast a string by using the "I05" format. Here, CCSDS_MET is the mission elapsed time, in seconds, from the PSP Epoch, which is defined to be January 1, 2010, 12:00:00 UTC and xxx_SUBSEC is the elapsed time in fractional seconds since the last tick of MET typically in units of 2^-16 seconds.

PT13.981S

s

F0

Time series defined by using: EPOCH

F0

F0

PT13.981S

Peak Bin

Time series defined by using: EPOCH

PEAK_BIN

Peak Bin

PT13.981S

Total Accumulation Period

Time series defined by using: EPOCH

TOT_ACCUM_PERIOD

Total Accumulation Period

PT13.981S

Number of Accumulations

Time series defined by using: EPOCH

NUM_ACCUM

Number of Accumulations

PT13.981S

SMP Bits

Time series defined by using: EPOCH

SMP_BITS

SMP Bits

PT13.981S

ARCH Bits

Time series defined by using: EPOCH

ARCH_BITS

ARCH Bits

PT13.981S

LTCS NNNN Bits

Time series defined by using: EPOCH

LTCSNNNN_BITS

LTCS NNNN Bits

PT13.981S

Status Bits

Time series defined by using: EPOCH

STATUS_BITS

Status Bits

PT13.981S

Product Bits

Time series defined by using: EPOCH

PRODUCT_BITS

Product Bits

PT13.981S

Mode 2

Time series defined by using: EPOCH

MODE2

Mode Number 2

PT13.981S

Data Quality Flag

Time series defined by using: EPOCH

QUALITY_FLAG

Data Quality Flag

PT13.981S

0

255

255

Differential Energy Flux versus Pitch Angle and Energy

Time series defined by using: EPOCH

EFLUX_VS_PA_E

Differential Energy Flux versus Pitch Angle, PA, and Energy, E

PT13.981S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

nan

Differential Energy Flux by Energy per Pitch Angle, spectrogram

Time series defined by using: EPOCH

EFLUX_VS_PA_E_byE_atP

Differential Energy Flux versus Energy Level, E, at each Pitch Angle, PA, spectrogram format.

• Column 1 Labels from ENERGY_VALS: ["Energy ~1793.95","Energy ~1443.31","Energy ~1160.97","Energy ~934.18","Energy ~751.21","Energy ~604.44","Energy ~486.20","Energy ~391.41","Energy ~314.45","Energy ~253.29","Energy ~203.86","Energy ~163.60","Energy ~132.00","Energy ~106.01","Energy ~85.11","Energy ~68.80","Energy ~55.04","Energy ~44.34","Energy ~35.68","Energy ~28.54","Energy ~22.93","Energy ~18.35","Energy ~14.78","Energy ~12.23","Energy ~9.68","Energy ~7.64","Energy ~6.12","Energy ~5.10","Energy ~4.08","Energy ~3.06","Energy ~2.55","Energy ~2.04"].
• Column 2 Labels from PITCHANGLE: ["PA ~7.5","PA ~22.5","PA ~37.5","PA ~52.5","PA ~67.5","PA ~82.5","PA ~97.5","PA ~112.5","PA ~127.5","PA ~142.5","PA ~157.5","PA ~172.5"].

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: EFLUX_VS_PA_E.

PT13.981S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

nan

Differential Energy Flux by Pitch Angle per Energy, spectrogram

Time series defined by using: EPOCH

EFLUX_VS_PA_E_atE_byP

Differential Energy Flux versus Pitch Angle, PA, at each Energy Level, E, spectrogram format.

• Column 1 Labels from ENERGY_VALS: ["Energy ~1793.95","Energy ~1443.31","Energy ~1160.97","Energy ~934.18","Energy ~751.21","Energy ~604.44","Energy ~486.20","Energy ~391.41","Energy ~314.45","Energy ~253.29","Energy ~203.86","Energy ~163.60","Energy ~132.00","Energy ~106.01","Energy ~85.11","Energy ~68.80","Energy ~55.04","Energy ~44.34","Energy ~35.68","Energy ~28.54","Energy ~22.93","Energy ~18.35","Energy ~14.78","Energy ~12.23","Energy ~9.68","Energy ~7.64","Energy ~6.12","Energy ~5.10","Energy ~4.08","Energy ~3.06","Energy ~2.55","Energy ~2.04"].
• Column 2 Labels from PITCHANGLE: ["PA ~7.5","PA ~22.5","PA ~37.5","PA ~52.5","PA ~67.5","PA ~82.5","PA ~97.5","PA ~112.5","PA ~127.5","PA ~142.5","PA ~157.5","PA ~172.5"].

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: EFLUX_VS_PA_E.

PT13.981S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

nan

Pitch Angle

Time series defined by using: EPOCH

PITCHANGLE

Pitch Angle, PA

PT13.981S

°

0.0174532925>rad

0.0

180.0

nan

Particle Energy

Time series defined by using: EPOCH

ENERGY_VALS

Particle Energy

PT13.981S

eV

1.602176565e-19>J

0.01

100000.0

nan

Differential Energy Flux versus Energy

Time series defined by using: EPOCH

EFLUX_VS_ENERGY

Differential Energy Flux versus Energy

PT13.981S

eV/(cm^2 s sr eV)

1.0e4>J/(m^2 s sr J)

0.001

1.0e+12

nan

Differential Energy Flux versus Phi, Energy

Time series defined by using: EPOCH

EFLUX_VS_PH_E

Differential Energy Flux versus Azimuth Angle, Phi, Energy, Ignore Data

PT13.981S

Azimuth Angle, Spacecraft coordinates

Time series defined by using: EPOCH

PHI_ANG

Azimuth Angle, Spacecraft, SC, coordinates, Ignore Data

PT13.981S

Differential Energy Flux versus Theta, Energy

Time series defined by using: EPOCH

EFLUX_VS_TH_E

Differential Energy Flux versus Elevation Angle, Theta, Energy, Ignore Data

PT13.981S

Elevation Angle, Spacecraft coordinates

Time series defined by using: EPOCH

THETA_ANG

Elevation Angle, Spacecraft, SC, coordinates, Ignore Data

PT13.981S

Magnetic Field, Spacecraft Coordinates

Time series defined by using: EPOCH

MAGF_SC

Magnetic Field, Spacecraft, SC, Coordinates

PT13.981S

nT

1.0e-9>T

-10000.0

10000.0

nan

Magnetic Field, Instrument Coordinates

Time series defined by using: EPOCH

MAGF_INST

Magnetic Field, Instrument Sensor Coordinates

PT13.981S

nT

1.0e-9>T

-10000.0

10000.0

nan

Valid

Time series defined by using: EPOCH

VALID

Valid

PT13.981S

Gap

Time series defined by using: EPOCH

GAP

Gap

PT13.981S

Index Number

Time series defined by using: EPOCH

INDEX

Index Number

PT13.981S