PDS_VERSION_ID = PDS3
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PUBLICATION_DATE = 2024-02-02
NOTE = "AAREADME.TXT describes this volume."
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Volume JNOWAV_0000 -- Version 26
Coverage Period 2011-08-05 to 2023-10-27
Released 2023-12-01
Juno Waves
Standard Raw Products
Waves Data Archive
Entire Mission
Planetary Plasma Interactions Discipline Node
of the
Planetary Data System
=============================================================================
Introduction
=============================================================================
The JNOWAV_0000 volume contains the safed Experiment Data Records (EDRs)
from the Juno Waves instrument starting from launch though the end of mission.
The products on this volume consist of raw instrument data packets that have
been minimally and reversibly transformed along with the instrument
housekeeping data. These data are included for completeness and as a way to
re-generate higher level products if necessary, but they are not
intended for use by the wider public. The companion volume JNOWAV_1000,
version 26 contains calibrated full-resolution data for the same time
period as this volume and should be consulted first.
Every effort has been made to assure that the data and documentation are
of the best possible quality. However, mistakes are inevitable. The PPI Node
of the PDS will maintain an online list of ERRATA where errors and updates are
documented. Should any user of this product find an error on this volume,
please report the error to the PPI Node so that the finding can be made
public.
=============================================================================
Quick Start Summary
=============================================================================
This volume, JNOWAV_0000, contains Juno Waves raw scientific data,
instrument command sequences, and housekeeping records from the entire
mission, and will be updated as new data become available. This release,
Version 26, includes all available EDRs for spacecraft event time
(SCET) dates 2011-08-05 through 2023-10-27.
KEY THINGS TO KNOW IN USING DATA ON THIS DISK:
* These data are *not* calibrated. For calibrated data see the companion
volume JNOWAV_1000.
* Science EDRs are stored under the DATA directory in files with the
extension *.PKT.
* Waves raw EDRs are not fixed length. In order to parse the science
EDRs a program must read the length of each packet before reading in the
associated packet bytes. See document DOCUMENT/WAVESEDR/WAVESEDR.HTM
for details on parsing raw Waves packets.
* General information on all Waves data sets may be found in the volume
software interface document (VOLSIS) in DOCUMENT/VOLSIS/INDEX.HTM.
=============================================================================
Relationship to Other Data Sets
=============================================================================
The companion standard products volume, JNOWAV_1000, contains all calibrated
full resolution electric and magnetic spectragrams as well as all full
resolution electric and magnetic waveforms collected via the Waves Instrument
from launch to end-of-mission. It is the JNOWAV_1000 volumes that is intended
for general investigation purposes, not this one.
In addition, many plasma wave phenomena are easier to interpret in the
presence of other particles and fields measurements. In particular knowing
the local DC magnetic field is useful for determining key frequencies such as
the electron cyclotron frequency and the upper and lower hybrid resonances.
Since the Waves instrument does not directly measure DC fields these
measurements must be obtained from another source. The recommended source is
volume(s) JNOFGM_1000 from the Juno MAG instrument team. The Juno MAG volume
should be available from PDS/PPI node operator.
=============================================================================
Errata
=============================================================================
There is a file called ERRATA.TXT found at the root level of this volume which
contains a list of known deficiencies or caveats associated with data on this
volume. Any changes or errors that are found on the JNOWAV_0000 volume set
can be found on the PPI Node errata Web page
(http://www.igpp.ucla.edu/cgi-bin/ditdos?errata=JNOWAV_0000).
Only through support and feedback of the users of these data can an
effective errata list be maintained.
=============================================================================
File Formats
=============================================================================
The primary data files on this volume are custom binary files. They are
specific to the Juno Waves instrument and do not follow any general use
format. The primary unit of data in these files is a Waves Ground Data System
(WGDS) packet. WGDS packets are described in the Waves EDR Format document,
DOCUMENT/WAVESEDR/WAVESEDR.HTM. Both Housekeeping and Science data files are
included on this volume. Science packets are stored in files ending in the
suffix '.PKT'. Housekeeping packets are stored in files ending in the suffix
'.DAT'. Despite this difference both file types contain a pure stream of WGDS
packets with no other headers or padding. Each packet file is described by a
detached PDS label. A detached label file has the same name as the data file
that it describes, but with the extension .LBL. For example, the file
WAV_2014042_LRS_V01.PKT is accompanied by the detached label file
WAV_2014042_LRS_V01.LBL in the same directory.
All documents, detached PDS labels, and HTML files are stream format files,
with a carriage return (ASCII 13) and a line feed character (ASCII 10) at the
end of the record. This allows the files to be read by Android, iPhone,
Linux, MacOS, and Windows systems. Many users may see an unnecessary carriage
return character (^M) at the end of each line. MacOS and iPhone users may see
an unnecessary line feed character (^J) at the start of each line.
ASCII tabular data files (.TAB) are formatted so that they may be read
directly into many database management systems (DBMS) or by common office
productivity software on various computers. All fields are of fixed length
and are separated by white space or commas. Character fields are left
justified, and numeric fields are right justified. The records are of fixed
length, and the last two bytes of each record contain the ASCII carriage
return and line feed characters. This allows a table to be treated as a fixed
length record file on computers that support this file type and as a normal
text file on other computers.
ASCII comma separated values files (.CSV) are also formatted so that they may
be read directly into many database management systems or by office
productivity software. In these files all fields are separated by a comma.
Text fields are contained in double-quotes and all rows end with an ASCII
carriage return and an line feed character. This allows the file to be read
either as a spreadsheet, or as a normal text file.
The document, PDS label, and ASCII table files on this volume can be viewed
with a Web browser. Note that to view these files, the browser may need to be
configured to recognize files with extensions of .CAT, .LBL, and .TAB as text
files. Users with Web browsers also can navigate the disk via the HTML file
AAREADME.HTM in the disk's root directory (this file).
PDS labels are object-oriented. The object to which the label refers
(e.g., FILE, TABLE, etc.) is denoted by a statement of the form:
^object = location
in which the caret character (^, also called a pointer in this context)
indicates that the object starts at the given location. For an object in the
same file as the label, the location is an integer representing the starting
record number or byte of the object (the first record/byte in the file is 1).
For an object located outside the label file, the location denotes the name of
the file containing the object, along with the starting record or byte number.
For example:
^INDEX_TABLE = ("INDEX.TAB", 2)
indicates that the INDEX_TABLE object begins at record 2 of the file
INDEX.TAB, in the same directory as the detached label file. Below is a list
of the possible formats that use the ^object keyword.
^object = n
^object = n❮BYTES❯
^object = ("filename.ext",n)
^object = ("filename.ext",n❮BYTES❯)
where
n - is the starting record or byte number of the object, counting from the
beginning of the file (record 1, byte 1); default is record number.
❮BYTES❯ - indicates that number given is in units of bytes.
filename - upper-case file name.
ext - upper-case file extension.
NOTE: In common PDS usage the label file would provide sufficient information
to decode the associated binary data file. This is not the case with this
volume. Waves science data packets are not fixed length data units, and the
PDS data description language does not have the ability to define variable
length objects and fields. Thus one must fall back on the WAVESEDR.HTM
document to understand packet file contents.
=============================================================================
Software
=============================================================================
No end-user example code is provided for reading data on this volume. This
volume exists merely to "safe" the Waves EDRs in case they must be
re-processed by a third party. Instead a TAR archive of the software used
by the waves team to process L2 to L3 data is provided in the file
EXTRAS/SOFTWARE/WAVES_L2_TO_L3.TGZ
=============================================================================
Volume Contents and Structure
=============================================================================
This section describes the volume structure and naming conventions. Below
is a tree diagram of the volume, followed by a description of the directory
function and key files in each directory.
[JNOWAV_0000] (root directory)
|
|- AAREADME.HTM (This file)
|
|- AAREADME.TXT Describes volume contents, organization, and use
|
|- ERRATA.TXT Describes known deficiencies or caveats in the
| data on this volume.
|
|- VOLDESC.CAT High level description of volume contents.
|
|
|- [CATALOG] Information on data sets and how they are
| processed and produced, on the Juno spacecraft
| and mission, on the Waves instrument, on cognizant
| personnel, and on references to various related
| documents.
|
|- [DATA] Contains text and binary files of instrument
| measurements and supporting information
| constituting the primary archive products.
|
|- [DOCUMENT] Waves EDR format document, Volume Software
| Interface Specification, and the Waves Instrument
| User's Guide.
|
|- [EXTRAS] Bonus content not necessarily conforming to
| PDS archive standards.
|
|- [INDEX] Volume and cumulative indices of archive
products.
=============================================================================
Contacts
=============================================================================
Chris Piker handles downlink operations for the Waves Instrument Operation
team the University of Iowa and prepares the Waves data archive. David Gell
operates the Juno Science Operations Center at the Southwest Research
Institute. William Kurth is the Waves principle investigator. Jack Connerney
is the MAG instrument principle investigator.
For questions or problems relating to functionality or technical details of
this archive, please contact the Waves downlink operator.
Email: chris-piker@uiowa.edu
Telephone: (319) 335-1960
U.S. Mail: Chris Piker
203 Van Allen Hall
Department of Physics and Astronomy
The University of Iowa
Iowa City, IA 52242-1479
For science or collaboration inquiries, please contact the Waves Principle
investigator:
Email: william-kurth@uiowa.edu
Telephone: (319) 335-1926
U.S. Mail: Dr. William Kurth
203 Van Allen Hall
Department of Physics and Astronomy
The University of Iowa
Iowa City, IA 52242-1479
For data usage inquiries regarding Juno Magnetometer data, please contact
the MAG Principle investigator:
Email: Jack.Connerney@nasa.gov
Telephone: (301) 286-5884
U.S. Mail: Dr. John E.P. Connerney
NASA/Goddard Space Flight Center
Code 695
Greenbelt, MD 20771
For questions or problems gathering Juno Waves data from JSOC please
contact the Juno Science Operations Center manager:
Email: david.gell@swri.org
Telephone: (210) 522-5559
U.S. Mail: Space Sciences and Engineering, Div 15
Southwest Research Institute
PO Drawer 28510
San Antonio, TX 78228-0510
For questions or problems regarding the JNOWAV_0000, and JNOWAV_1000 volumes,
please contact the PDS/PPI operator:
Email: pds_operator@igpp.ucla.edu
Telephone: (310) 206-6073
U.S. Mail: PDS Operator
c/o Dr. Raymond Walker
3845 Slichter Hall
UCLA - IGPP
Los Angeles, CA 90095-1567
For questions regarding PDS Standards or other archive volumes available
from the PDS, please contact PDS Operator at the PDS Central Node (at JPL):
Email: pds_operator@jpl.nasa.gov
U.S. Mail: Planetary Data System, PDS Operator
Jet Propulsion Laboratory
Mail Stop 202-101
4800 Oak Grove Dr.
Pasadena, CA 91109-8099
=============================================================================
Disclaimer
=============================================================================
The PDS, the Planetary Plasma Interactions (PPI) Node, the Juno Science
Operation Center (JSOC) and the Juno Waves team assume no legal liability for
errors in this archive. All users are encouraged to verify the "correctness"
of the data prior to submitting any publications or other work based on these
data. Errors in this archive should be reported back to the Juno Waves team
through the ERRATA reporting procedures described above.
All trademarks are acknowledged as the property of their respective owners.
The producers and publishers of this archive do not endorse any commercial
entities which may be mentioned for clarity.
=============================================================================
Acknowledgments
=============================================================================
These data were collected under the auspices of the Juno Project. Dr.
William Kurth was the Waves Science Principal Investigator. The archiving
effort at The University of Iowa was supported by Chris Piker.
This archiving effort was supported by the Planetary Plasma Interactions
Node of the Planetary Data System. Assistance was provided by S. Joy of the
University of California, Los Angeles, and by R. Joyner of the Jet Propulsion
Laboratory.
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