Version:2.2.9

NumericalData

ResourceHeader

ResourceName

STEREO-B In-situ Measurements of Particles And CME Transients (IMPACT) Magnetic Field Vectors and Ancillary Data

AlternateName

STEREO-B IMPACT/MAG Level 1 Data

ReleaseDate

2019-08-05 15:03:35Z

Description

This data product contains Level 1 0.125-s values of solar wind magnetic field data taken by the IMPACT/Magnetometer on STEREO-B. The interface at UCB provides access to CDF-formatted files of magnetic field data in RTN coordinates. The interface at UCLA allows selection of STEREO A or STEREO B data and of vector quantities in RTN or spacecraft coordinates. It also allows selection of either of two parameter sets: [Bx, By, Bz, B ] or [RBx, RBy, RBz, B , cone and clock angles]. Further, this interface enables easy migration between plot vs. ASCII data presentation options and among the three available resolutions (1, 8, 32 Hz). The parameter level information given below is specific to the CDF version of the data at UCB.

Acknowledgement

The STEREO IMPACT/MAG Team

Contacts

	Role	Person
1.	DataProducer	spase://SMWG/Person/Peter.Schroeder
2.	PrincipalInvestigator	spase://SMWG/Person/Janet.G.Luhmann

InformationURL

Name

STEREO IMPACT Mission Site

URL

http://sprg.ssl.berkeley.edu/impact/

Description

The web site provides detailed descriptions of the STEREO IMPACT MAG instrument as well as associated data sets.

InformationURL

Name

IMPACT MAG data-descriptive page at UCLA page

URL

http://www-ssc.igpp.ucla.edu/ssc/stereo/

PriorIDs

spase://VHO/NumericalData/STEREO-B/IMPACT/MAG/L1_PT0.125S

AccessInformation

RepositoryID

spase://SMWG/Repository/UCLA

Availability

Online

AccessRights

Open

AccessURL

Name

IMPACT MAG Interface at UCLA

URL

http://aten.igpp.ucla.edu/forms/stereo/ascii_heliocentric_8hz_final.html

Format

Text

Acknowledgement

Please acknowledge the IMPACT MAG team and Dr. C.T. Russell for the UCLA data interface.

AccessInformation

RepositoryID

spase://SMWG/Repository/NASA/GSFC/SPDF

Availability

Online

AccessRights

Open

AccessURL

Name

FTP access to files at SPDF

URL

ftps://spdf.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/rtn/mag/

Description

FTP repository of Level1 magnetic field vectors form the IMPACT/MAG instrument in CDF format at CDAWeb

AccessURL

Name

HTTP access to files at SPDF

URL

https://spdf.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/rtn/mag/

Description

In CDF via HTTP from SPDF

Format

CDF

Acknowledgement

Please acknowledge the Principal Investigator Janet Luhmann and the CDAWeb team at GSFC/SPDF.

AccessInformation

RepositoryID

spase://SMWG/Repository/NASA/GSFC/SPDF

Availability

Online

AccessRights

Open

AccessURL

Name

CDAWeb

URL

https://cdaweb.sci.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=STB_L1_MAG_RTN&index=sp_phys

ProductKey

STB_L1_MAG_RTN

Description

Level 1 magnetic field vectors data from the IMPACT/MAG instrument on the STEREO Behind spacecraft with subset, plot, list from CDAWeb

Format

Text

Acknowledgement

Please acknowledge the Principal Investigator Janet Luhmann and the CDAWeb team at GSFC/SPDF.

AccessInformation

RepositoryID

spase://SMWG/Repository/STEREO/IMPACT

Availability

Online

AccessRights

Open

AccessURL

Name

Download of STEREO-B IMPACT/MAG Level 1 data

URL

http://stereo.ssl.berkeley.edu/l1data/behind/mag/RTN/

Description

A web site hosting the STEREO-B IMPACT/MAG Level 1 data

Format

CDF

Encoding

None

ProviderResourceName

STEREO-B IMPACT/MAG Level 1 Data

ProviderProcessingLevel

1

ProviderVersion

3

MeasurementType

MagneticField

TemporalDescription

TimeSpan

StartDate

2006-11-08 00:00:00Z

RelativeStopDate

-P01M

Cadence

PT0.125S

ObservedRegion

Heliosphere.Remote1AU

Caveats

Current version of the data include very fast (subsecond) glitches in the magnetometer's X sensor. Magnitude of these glitches are approximately 0.5 nT and occur at varying frequencies throughout the mission.

Parameter #1

Name

Time

ParameterKey

Epoch

Description

Number of milliseconds since 0 AD

Caveats

Interval-centered time tag

Units

ms

UnitsConversion

1.0e-3>s

ValidMin

01-Jan-1990 00:00:00.000

ValidMax

31-Dec-2020 00:00:00.000

FillValue

31-Dec-9999 23:59:59.999

Support

SupportQuantity

Temporal

Parameter #2

Name

Magnetic Field Vector in RTN Coordinates

ParameterKey

BFIELD

Description

Magnetic field vectors as measured by the IMPACT/MAG instrument in RTN coordinate system.

Units

nT

UnitsConversion

1.0e-9>T

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

RTN

Structure

Size

4

Element

Name

Bx

Qualifier

Component.I

Index

1

ValidMin

-Infinity

ValidMax

Infinity

FillValue

-1.0E31

Element

Name

By

Qualifier

Component.J

Index

2

ValidMin

-Infinity

ValidMax

Infinity

FillValue

-1.0E31

Element

Name

Bz

Qualifier

Component.K

Index

3

ValidMin

-Infinity

ValidMax

Infinity

FillValue

-1.0E31

Element

Name

B Magnitude

Index

4

ValidMin

-Infinity

ValidMax

Infinity

FillValue

-1.0E31

Field

Qualifier

Vector

FieldQuantity

Magnetic

Parameter #3

Name

MAG Flag

Description

Error Flag - bit 0:3 Mag Error counter bit 4:7 Mag Command counter bit 8 spare bit 9 First bit 10 Time bit 11 Interface Parity Error (0=OK, 1=Fault) bit 12 Interface Timeout Error (0=OK, 1=Fault) bit 13 ADC Cal (0=OFF, 1=ON) bit 14 In Flight Cal (0=OFF, 1=ON) bit 15 Range (0=low fields, high sensitivity, 1=high fields, low sen bit 16 Calibration (0=old cal, 1=new cal) bit 17 STEREO STEPPING For X-axis bit 18:31 spare

ValidMin

0

ValidMax

4294967295

Support

SupportQuantity

Other