Index of /holdings/sdu-c_cal-navcam-3-next-tempel1-v1.0
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calib/ 04-Mar-2012 14:56 -
catalog/ 04-Mar-2012 14:56 -
data/ 04-Mar-2012 14:56 -
document/ 30-May-2012 14:37 -
DOWNLOAD/ 01-Jun-2012 14:24 -
extras/ 30-May-2012 14:37 -
index/ 30-May-2012 14:37 -
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aareadme.txt 16-May-2012 16:21 31K
dataset.html 10-Sep-2015 12:34 2.6K
errata.txt 16-May-2012 16:21 3.4K
voldesc.cat 22-Dec-2011 01:44 5.1K [PDS catalog file]
PDS_VERSION_ID = PDS3
LABEL_REVISION_NOTE = "
2012-02-21 Cornell:BTCarcich incorporated comments from Ken Klaasen.
"
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 80
MISSION_NAME = "NEXT"
INSTRUMENT_HOST_NAME = "STARDUST"
OBJECT = TEXT
PUBLICATION_DATE = 2012-02-09
NOTE = "Stardust-NExT archive data. This is the 'Read
me first' file for this data set. It is duplicated
in two places in the data set: in the top-level
directory as AAREADME.TXT; in the DOCUMENT/ directory
as AAAREADME.TXT. The PDS standard requires the
former but PDS does not guarantee its preservation,
so it is duplicated in the DOCUMENT/ directory."
END_OBJECT = TEXT
END
Stardust-NExT archive data set for NAVCAM RDR data.
This file is the "Read me first" file for this data set. Its purpose is to
be the starting point for any user who wishes to view and understand the data
in this data set. It contains a high-level description of the contents of
this data set, and points the user to other documents in this data set that
contain more detailed descriptions of the data along with pointers to
additional documentation. If the information in this data set is represented
as a tree, with each file as a leaf covering a specific area or sampled data,
then this file is the root of the tree. Some of the 'leaves' contain
reference to external information sources such as journal articles or other
data sets; those references are considered an integral part of this data set
and are often critical for understanding the data.
All of the data sets for the Stardust-NExT mission instrument data have been
prepared in a similar manner, so the "Read me first" files for these data
sets will be similar.
This file comprises the following sections:
1) Introduction to this data set, including pointers to other files that
explain what is in the data set
1.1) Quick start
1.2) Product description
2) Data set medium format
3) File formats - where to learn about the formats used in this data set
4) Data set contents - a high-level description of the directory layout
5) Recommended computer software
6) Errata, Disclaimer and PDSDD
6.1) PDS Data Dictionary (PDSDD)
7) Whom to Contact for further Information
1) Introduction
===============
This volume contains NAVCAM CODMAC level 3 products from the Stardust-NExT
mission. It also contains documentation which describes these products.
1.1) Quick start:
-----------------
The data set files are laid out with a directory (a.k.a. folder) structure.
The most important top-level directories are CATALOG/, DOCUMENT/ and DATA/.
The CATALOG/ directory contains high-level PDS catalog files which describe
the mission, spacecraft, instrument and other information related to this
data set. The catalog files also contain references to external materials
such as journal articles. See CATALOG/CATINFO.TXT for more details.
The DOCUMENT/ directory contains more detailed descriptions of this data set.
See DOCUMENT/DOCINFO.TXT for more details.
The DATA/ directory contains the data in this data set. Subdirectories
partition the data by date and/or by target. Each data product has a
corresponding PDS data label in accordance with the Planetary Data System
(PDS) Standards reference, Version 3.8, document JPL D-7669. See
DOCUMENT/DATAINFO.TXT for more details.
The BROWSE/ directory contains a browsing facility for the data. See
BROWSE/BROWINFO.TXT for more details.
1.2) Product description
------------------------
Each NAVCAM calibrated (RDR) product comprises several sections: the image
pixel data from the CCD calibrated to spectral radiance; the BaseLine
Stabilization (BLS or bias) pixels from the CCD electronics; the prefix table
from the instrument telemetry; the image histogram from the ground data
system; the original PDS label from the ground data system; a quality map of
the image; an uncertainty map; a signal-to-noise ratio (SNR) map.
See also DATA/DATAINFO.TXT, CATALOG/DATASET.CAT and DOCUMENT/DOCINFO.TXT for
further details.
The products archived in this volume have all been released by the
Stardust-NExT Project.
2) Data set medium format
=========================
This data set has been delivered to PDS in an electronic format, transferred
via either the Internet or portable disk drive. User access will typically
be via a web browser over the Internet to a web server at the Small Bodies
Node of PDS (currently http://pdssbn.astro.umd.edu/). Duplicating the
directory hierarchy and contents recursively from the directory which
contains this AAREADME.TXT file and below is all that is required to copy
this data set.
3) File format
==============
Each data product and all files with content have a PDS label. The PDS label
is the definitive and complete source describing the data layout and format
in each product in this data set. The PDS label may be attached or detached.
Attached labels are in the same file as the data at the start of the file.
Detached labels are separate files with pointers to the data files; detached
label filenames always end in .LBL or .lbl. The label files conform to the
Planetary Data System (PDS) Standards, Version 3.8, Jet Propulsion Laboratory
(JPL) document JPL D-7669 Part 2; refer to this standards reference for
details in interpreting the label and contents of any file in this data set.
PDS labels for data products also contain parameter values such as the start
and end times of the data in the data product.
NAVCAM image data products are stored as Primary Data Unit (PDU) images and
multiple Extension Data Units (EDUs) in FITS files; see
http://fits.gsfc.nasa.gov/iaufwg/iaufwg.html
FITS-savvy users may use existing FITS software to view and process these
data. However, the PDS labels adequately describe both the conditions of
each observation (geometry, camera parameters, &c) and the data layout and
format in the files, so FITS software is not necessary to work with these
data. The FITS headers in the files were developed for use by the science
team and are provided as-is with no documentation beyond the comments that
follow most FITS header keyword values.
All detached label files contain 80-byte fixed-length records, with a
carriage return character (ASCII 13) in the 79th byte and a line feed
character (ASCII 10) in the 80th byte. This format allows the files to be
read by many different operating systems (e.g. MacOS, Windows, DOS, Unix,
Linux, VMS etc.). All tabular files are also described by PDS labels,
either embedded at the beginning of the file (attached) or detached. If
detached, the PDS label file has the same, or a similar, name as the data
file(s) it describes, with the extension .LBL; for example, the file
INDEX.TAB is accompanied by the detached label file INDEX.LBL in the same
directory.
Tabular files are formatted so that they may be read directly into many
database management systems on various computers. All fields are separated by
commas, and character fields are enclosed in double quotation marks (").
Character fields are left justified, and numeric fields are right justified.
The "start byte" and "bytes" values listed in the labels do not include the
commas between fields or the quotation marks surrounding character fields.
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.
4) Data set contents and directory layout
=========================================
The following ASCII graphic describes the file layout of this data set.
TOP-LEVEL-DIRECTORY/
|
+--AAREADME.TXT The text version of the "Read me first" file.
| This file is the starting point for documentation
| describing this data set. A duplicate of this
| file has been placed in the DOCUMENT/ directory
| as AAAREADME.TXT because PDS does not guarantee
| preservation of this top-level AAREADME.TXT file.
|
+--ERRATA.TXT File listing known data set anomalies and errors
|
+--VOLDESC.CAT Description of the contents of this volume.
|
+--CATALOG/ Directory containing PDS catalog objects; refer
| | to CATINFO.TXT for details.
| +--CATINFO.TXT File with detailed description of contents of
| | CATALOG/ directory.
| +--*.CAT Catalog files (mission, spacecraft, instrument,
| data set, personnel, references)
|
+--DATA/ Directory containing NAVCAM data files; refer to
| | DATAINFO.TXT for details.
| +--DATAINFO.TXT File describing the layout of data files under
| | the DATA/ directory along with any optional
| | subdirectories.
| |...<path>/ Optional subdirectories of DATA/, described in
| | DATAINFO.TXT.
| |...<path>/*.LBL Optional detached labels for data files
| |...<path>/*.* The data files themselves
|
+--DOCUMENT/ Directory containing documents necessary for
| | understanding this data set; refer to DOCINFO.TXT
| | for details.
| +--DOCINFO.TXT File with detailed description of contents of
| | DOCUMENT/ directory
| |
| +--AAAREADME.TXT Duplicate of top-level AAREADME.TXT; see above
| |
| +--*.TXT Documents with attached labels
| +--*.LBL Detached PDS labels, one for each document.
| | Each label may refer to more than one file.
| | Each label has a DESCRIPTION keyword, the value
| | of which describes the document.
| +--*.* The documents themselves
| |
| +--*/ Subdirectory(ies) of DOCUMENT/. See
| DOCINFO.TXT for more information.
|
+--INDEX/ Directory containing tabular summaries of the
| | data and files in this data set; refer to
| | INDXINFO.TXT for details.
| +--INDXINFO.TXT File with detailed description of contents of
| | of INDEX/ directory.
| +--*.LBL PDS labels, one for each index.
| +--*.TAB Index tables
|
+--BROWSE/ Directory containing data set browse facility;
| | refer to BROWINFO.TXT for details
| +--BROWINFO.TXT File with detailed description of contents of
| | of BROWSE/ directory.
| |
| +--*.LBL PDS labels
| +--*.* Browse files
| |
| +--*/ BROWSE/ subdirectories
|
+--EXTRAS/ Directory containing additional information that
| may be useful for understanding this data set,
| but which does not readily fit in one of the
| other PDS categories. See EXTRINFO.TXT for
| details.
+--EXTRINFO.TXT File with detailed description of contents of
| EXTRAS/ directory.
|
+--PDSDD_NEXT.FULL Proposed PDS Data Dictionary (See 6.1 below)
|
+--*.* Any EXTRAS/ files.
+--*/ Any EXTRAS/ subdirectories.
5) Recommended computer software
================================
As noted above, this data set was delivered to PDS-SBN in electronic format.
Any computer system capable of replicating the directory (folder) structure
should be able to maintain a usable copy of this data set. At the time of
the delivery of this data set (2011 A.D.), that specification will be met by
computers running the following operating systems: Microsoft Windows; Apple
Mac OSX; Unix(tm) derivatives including Linux; VMS.
Tabular data may be imported into a spreadsheet application (OpenOffice.org
Spreadsheet or Microsoft Office Excel) or a database application (MySQL,
PostgreSQL, Microsoft SQL Server or Microsoft Office Access). Tabular data
may also be viewed with a PDS tool called NasaView:
http://pds.nasa.gov/tools/nasa-view.shtml
PDS supplies tools that may be of use in viewing the data files in this data
set:
http://pds.nasa.gov/tools/index.shtml
http://pds.nasa.gov/tools/other-tools.shtml
NAVCAM image data can be viewed with NasaView, as well as by using FITS
libraries within other programming environments:
FITSIO library in several environments (C, FORTRAN, etc.)
(http://heasarc.gsfc.nasa.gov/fitsio/)
Native FITS reader in Matlab
IDL Astronomy Library (http://idlastro.gsfc.nasa.gov/)
Documentation and data labels may be viewed with word processing
applications: OpenOffice.org Word Processor; Microsoft Office Word; editors
such as VI, VIM, GEDIT and others in the Linux/Unix(tm) environment. ASCII
files, such as tables and PDS labels, may be viewed with many web browsers.
Some documentation files are stored as PDF (Portable Document Format) files;
PDF filenames will end in .PDF (case-insensitive). A PDF reader (e.g.
Acrobat reader on Windows and Mac OSX, acroread on Unix, Document Viewer on
Linux, or a PDF plug-in for a web browser) is necessary to view these files,
but in the absence of such readers all PDF documents also have alternate
versions that will be easier to view.
6) Errata, Disclaimer and PDSDD
===============================
A cumulative list of anomalies and errors is maintained in the file
ERRATA.TXT at the root directory of this volume. Over time and multiple
versions of this data set it is anticipated that the errors will be corrected
and the anomalies incorporated into the data set documentation. Users should
always check the latest ERRATA.TXT file for this data set before using the
data for any purpose.
Although considerable care has gone into making this volume, errors are both
possible and likely. Users of the data are advised to exercise the same
caution as they would when dealing with any other unknown data set.
At the time of delivery of this data set no known anomalies exist and the
ERRATA.TXT file comprises only its attached label.
Reports of errors or difficulties would be appreciated. Please contact one of
the persons listed herein.
6.1) PDS Data Dictionary (PDSDD)
--------------------------------
This data set presupposes and proposes the following STANDARD_VALUE_SET
entries will be added to the PDS Data Dictionary; see also the file
PDSDD_NEXT.FULL in the EXTRAS/ directory. Until those entries are added, PDS
validation tools may generate errors and/or warnings when run against this
data set. Changes proposed for all Stardust-NExT instrument data sets (CIDA,
DFMI, NAVCAM) are included here so PDS personnel do not have to browse
several data sets to compile the proposed changes.
STANDARD
_VALUE
Keyword _TYPE New entry
------------ --------- ---------
MISSION_NAME STATIC NEXT
DATA_SET_ID FORMATION SDU-C/CAL-NAVCAM-3-NEXT-TEMPEL1-V1.0
DATA_SET_NAME FORMATION STARDUST 9P/TEMPEL 1 NAVCAM 3 NEXT V1.0
VOLUME_SET_NAME DYNAMIC STARDUST NAVCAM RDR DATA
INSTITUTION_NAME DYNAMIC FINNISH METEOROLOGICAL INSTITUTE
INSTITUTION_NAME DYNAMIC THE OPEN UNIVERSITY
INSTRUMENT_MODE_ID DYNAMIC NEGATIVE ION MODE
INSTRUMENT_MODE_ID DYNAMIC POSITIVE ION MODE
PRODUCT_TYPE SUGGESTED SPECTRUM
CONFIGURATION_PARAMETERS
FDAQ_CALIBRATION
GLOBAL_VARIABLES
HOUSEKEEPING
DOCUMENT_FORMAT DYNAMIC MICROSOFT EXCEL
WAVE
FACILITY_NAME DYNAMIC CENTER FOR RADIOPHYSICS AND SPACE RESEARCH
LABORATORY FOR ASTROPHYSICS & SPACE
RESEARCH
PSSRI
FILTER_NAME DYNAMIC OPNAV
INSTITUTION_NAME DYNAMIC FINNISH METEOROLOGICAL INSTITUTE
THE OPEN UNIVERSITY
MISSION_NAME STATIC NEXT
MISSION_PHASE_NAME DYNAMIC CHECKOUT
CRUISE 5
CRUISE 6
TEMPEL 1 ENCOUNTER
VOLUME_SET_ID FORMATION USA_NASA_JPL_SDNAVCAM_XXXX
VOLUME_SET_NAME DYNAMIC STARDUST CIDA DATA
STARDUST CIDA EDR/RDR DATA
STARDUST DFMI EDR/RDR DATA
STARDUST NAVCAM EDR DATA
STARDUST NAVCAM RDR DATA
7) Whom to Contact for further Information
==========================================
Refer to the personnel catalog file CATALOG/PERSONNEL.CAT, included in this
data set, to get contact information for the following people.
For questions concerning this data set, data products and documentation:
Brian Carcich
For questions concerning the generation of the data products under DATA/:
Brian Carcich
For questions concerning the instrument and instrument data:
Ken Klaasen
For questions concerning the data labels:
Brian Carcich