Volume PV08_0003

Pioneer Venus Orbiter - Venus Orbital Operations CD_ROM

Orbiter Ion Mass Spectrometer Datasets

Orbits 3000-5055

Planetary Plasma Interactions Node

of the

Planetary Data System


Links to sections of this document:
 

Links to HTML pages describing the data:
 

Introduction

High-Resolution Data

Brief Disk Description

Catalog Files

Documents

Documents

Volume Set Information

 

Errata

 

Software

 

File Formats

 

Disk Format

 

Volume Contents and Structure

 

Point of Contact

 

Cognizant_Persons

 


Introduction


This disk contains Venus Orbital Operations data submitted to the Planetary Data System (PDS) by the PVO project Ion Mass Spectrometer principal investigator. Every effort has been made to ensure that the data are of the best quality available. However, the PDS, and the Planetary Plasma Interactions (PPI) Node in particular, assume no liability for this disk or its contents. All users are encouraged to verify the "correctness" of the data prior to submitting any publications or other work based on these data.

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Brief Disk Description


This CD-ROM contains data for orbits 3000-5055 covering the time period between 1987-03-23 and 1992-10-07. All data files are stored in the "DATA" branch of the directory tree. Data are stored in ASCII tables which are described by detached PDS labels (.LBL) and format files (.FMT). Each orbit is stored in a separate file. Data do not exist for every one of the 5055 orbits of the PVO mission; some orbits are missing due to data loss or data processing problems.

Users of this disk should read the INFO.TXT files located in each data directory, which describe the data in that directory as well as the other files in that directory. Although the INFO.TXT file can be large, it contains the most relevant information first. Typically, it begins by describing the type of data in the directory and the most useful files.

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Documents


This CD-ROM contains instrument description text which has been extracted from the original instrument paper. All copyright protections associated with this document are retained by the publisher, IEEE. All occurrences of the document on this CD-ROM contain the following copyright permissions statement in some form:

Copyright © 1980 IEEE, Reprinted, with permission, from IEEE Transactions on Geoscience and Remote Sensing, GE-18, 60-65, 1980.

The material is posted here with permission of the IEEE. Such permissions of the IEEE does not in any way imply IEEE endorsement of any of PDS's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by sending a blank email message to info.pub.permission@ieee.org.

By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

This CD-ROM also contains other copyrighted materials, including journal papers and parts of journal papers.

Users of this CD-ROM and/or the Planetary Data System are required to comply with the copyright laws governing the usage of this material.

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Volume Set Information


This CD-ROM is the second disk of the PV08_xxxx series. This volume set contains the processed data from the Orbiter Ion Mass Spectrometer (OIMS) experiment. Every volume will contain full resolution data (generally 6.3 sec; however, there is some variability due to telemetry rate changes and data gaps) and the first two volumes will contain 12 second averaged UADS data files. The UADS dataset was not generated after orbit 2997, and hence is not present on the third disk. This volume set will contain orbits 1-5055 (1978-12-05 to 1992-10-07).

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Errata


There is a file called ERRATA.TXT found at the root level of this volume which contains a list of changes and errors known at the time when this CD was published. This is a list of cumulative changes and errors in all PVO OIMS CD-ROMs (volume set PV08) created by this production date.

Any changes or errors that were found to any PV08 CD-ROM after the production of this volume can be found via anonymous FTP at ftp.igpp.ucla.edu. The account name is anonymous and the password should be your e-mail address (it's nice to leave an audit trail). Change to the PDS errata directory (cd pds/ERRATA/PV08), and transfer the file ERRATA.TXT (get ERRATA.TXT).

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Software

There is no software provided with these data at this time.


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File Formats


All files on this disk are described by detached version 3.3 PDS labels.

PDS labels are identified by a .LBL file name extension. There is one label file for each text or data file contained on this disk, and the file name prefix is the same as the file the label describes. If the dataset is stored as multiple files (as most of them are), there will be a single format file which describes the physical structure of the data. This format file is pointed to by all of the labels. Both the label files and the format files (*.FMT) are located in the same directories as the data they describe.

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Disk Format


The disk is organized into a hierarchical directory structure which the PPI Node hopes will be intuitive for the user as well as easy to use. The disk is formatted according to both ISO 9660 and POSIX (UNIX) standards to accommodate users on a wide variety of platforms. All of the label, table, and text files are ASCII with CR/LF (VMS / IBM-PC) line endings.

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Volume Contents and Structure


This section describes the volume structure and naming conventions. Below is a tree diagram of the CD-ROM, followed by descriptions of the directory functions and of key files in each directory.


                                                                              
          CD-ROM                                                              
            |                                                                 
            |                                                                 
            +- CATALOG                                                        
            |                                                                 
            |                                                                 
            +- DOCUMENT                     
            |    |                                                            
            |    +-MISSION                                                    
            |    |                                                            
            |    +-BRACE                                                      
            |    |                                                            
            |    +-DATA                                                       
            |    |                                                            
            |    +-GREBOWSK                                                   
            |    |                                                            
            |    +-INST                                                       
            |    |                                                            
            |    +-MILLER                                                     
            |                                                                 
            +- EXTRAS                                                         
            |                                                                 
            |                                                                 
            +- INDEX                                                          
            |                                                                 
            |                                                                 
            +- MANAGE                                                         
            |                                                                 
            |                                                                 
            +- DATA                                                           
                 |                                                            
                 +- HIGH_RES                
                                                                              
                                                                              
  CATALOG  Contains mission, spacecraft, dataset, and instrument              
           templates.                                                         
                                                                              
                                                                              
       key files:                                                             
           MISSION.CAT     Mission template for the Pioneer Venus mission     
           PVO_HOST.CAT    Instrument Host (Spacecraft) template for PVO      
           PVMPHOST.CAT    Instrument Host (Spacecraft) template for PV       
                           Probes (included here for completeness' sake)      
           OIMSINST.CAT    OIMS instrument description                        
           HI_RESDS.CAT    OIMS high resolution data set description          
           12SDS.CAT       OIMS 12 second data set description                
           REF.CAT         OIMS references                                    
                                                                              
  DOCUMENT Contains 6 documents which are considered important to the         
           understanding of these and other PVO charged particle              
           experiment datasets. Each document is stored in its own            
           directory. Some of the documents have been scanned                 
           electronically and stored as GIF files (images of the              
           actual pages) or converted to HTML, which preserves the            
           original format of the document as much as possible.               
           Also, each document has been converted to an ASCII text            
           file (with all graphics missing).                                  
                                                                              
                                                                              
       key files:                                                             
           DOCINFO.TXT  - Describes the contents of the DOCUMENT              
           directory.                                                         
                                                                              
                                                                              
  DOCUMENT/BRACE contains the appendix extracted from                         
           Brace, L. H. and A. J. Kliore, "Structure of the Venus             
           Ionosphere", Space Science Reviews, v55, p81-163, 1991.            
           [BRACE&KLIORE1991], which describes some of the problems           
           associated with the inter-calibration of the charged particle      
           detectors aboard PVO.                                              
                                                                              
                                                                              
       key files:                                                             
           BRACE.ASC - ASCII text version of appendix A from reference        
                       above.                                                 
           BRACE.HTM - HTML version of appendix A from reference above.       
           INFO.TXT  - Describes the contents of the                          
                       DOCUMENT/BRACE directory.                              
                                                                              
                                                                              
  DOCUMENT/DATA contains the dataset description documentation that was       
           provided by the principal investigators to the National Space      
           Science Data Center. The dataset documentation has been edited     
           from its original form, but does not reflect exactly the           
           current structure of the dataset as it appears on this volume.     
                                                                              
                                                                              
       key files:                                                             
           HIGH_RES.ASC - ASCII text version of the high resolution           
                          dataset documentation                               
           HIGH_RES.GIF - GIF image file of the high resolution dataset       
                          documentation                                       
           INFO.TXT     - Describes the contents of the DOCUMENT/DATA         
                          directory                                           
           LOW_RES.ASC  - ASCII text version of the low                       
                          resolution dataset documentation                    
           LOW_RES.GIF  - GIF image file of the low resolution dataset        
                          documentation                                       
                                                                              
                                                                              
  DOCUMENT/GREBOWSK contains the appendix extracted from                      
             Grebowsky, J. M., W. T. Kasprzak, R. E. Hartle, K. K.            
             Mahajan, T. C. G. Wagner, "Superthermal ions detected in the     
             Venus dayside ionosheath, ionopause, and magnetic barrier        
             regions", J. Geophys. Res., vol 98, No. E5, pg 9055-9064,        
             1993. [GREBOWSKYETAL1993]                                        
          which discusses the OIMS instrument response to superthermal        
          ions. The text has been included as part of the documentation       
          accompanying the PVO-OIMS data in order to fulfill a                
          requirement imposed during the PDS peer review process. The         
          text is the appendix from the document list above. This             
          appendix is titled "Response of OIMS to Superthermal Ions".         
                                                                              
                                                                              
       key files:                                                             
           GREBOWSK.ASC - ASCII text version of document.                     
           GREBOWSK.HTM - HTML version of document.                           
           FIGxx.GIF    - GIF image file of page xx.                          
           INFO.TXT     - Describes the contents of the DOCUMENT/GREBOWSK     
                          directory                                           
                                                                              
                                                                              
  DOCUMENT/INST contains the original instrument description and initial      
                results paper                                                 
            Taylor, H.A., Jr., Brinton, H.C., Wagner, T.C.G., Blackwell,      
            B.H., Cordier, G.R., "Bennett Ion Mass Spectrometers on the       
            Pioneer Venus Bus and Orbiter", IEEE Trans. Geoscience and        
            Remote Sensing, vol GE-18, No 1, p44-49, 1980.                    
            [TAYLORETAL1980] as both an ASCII text file and an HTML           
            file.                                                             
                                                                              
                                                                              
       key files:                                                             
           INFO.TXT  - Describes the contents of the DOCUMENT/DATA            
                       directory.                                             
           INST.ASC  - ASCII text version of document.                        
           INST.HTM  - HTML version of document.                              
           FIGxxx.GIF - GIF image file of figure xxx.                         
                                                                              
                                                                              
  DOCUMENT/MILLER contains selected sections extracted from                   
             Miller, K. L., W. C. Knudsen, K. Spenner, "The Dayside           
             Venus Ionosphere", Icarus, 1984. [MILLERETAL1984],               
           which describes some of the problems associated with the           
           inter-calibration of the charged particle detectors aboard         
           PVO.                                                               
                                                                              
                                                                              
       key files:                                                             
           INFO.TXT   - Describes the contents of the DOCUMENT/MILLER         
                        directory.                                            
           MILLER.ASC - ASCII text version of appendix A from                 
                        reference above.                                      
           MILLER.HTM - HTML version of appendix A from reference             
                        above.                                                
           FIGxx.GIF - GIF image file of figure xx.                           
                                                                              
                                                                              
  DOCUMENT/MISSION contains both an ASCII and a hypertext version of a        
                document containing information from the catalog              
                templates together with numerous scanned images               
                from NASA document SP-518 [FIMMELETAL1995], and               
                describing the mission.                                       
                                                                              
                                                                              
       key files:                                                             
           FIGxxx.GIF   - GIF image file of figure XX.                        
           MISSION.ASC  - ASCII text version of the above reference.          
           MISSION.HTM  - HTML version of the document (graphics              
                          included).                                          
                                                                              
                                                                              
  EXTRAS   Contains files which are helpful to the user but not essential     
           to the use or understanding of the data.  On this disk, the        
           EXTRAS directory contains HTML files which can be used to          
           navigate the disk with a Web browser. These files can be           
           accessed via links in the root-level file AAREADME.HTM.            
                                                                              
                                                                              
       key files:                                                             
           CATALOG.HTM   - HTML access to catalog files                       
           DOCUMENT.HTM  - HTML access to document files                      
           EXTRINFO.TXT  - Information about directory contents               
           HIRESDAT.HTM  - HTML access to the high-resolution data            
                                                                              
                                                                              
  INDEX    Contains a cumulative index table (CUMINDEX.TAB) which             
           describes the location of files on the PV08 collection             
           (PVO OIMS). In addition, there is a file (INDEX.TAB) which         
           gives the name and location of all files on this volume. These     
           index files have been provided for users who do not wish to        
           make use of the DITDOS software.                                   
                                                                              
                                                                              
       key files:                                                             
           CUMINDEX.TAB - Contains a cumulative index for the PV08 volume     
                          set.                                                
           CUMINDEX.LBL - Describes the columns and format of                 
                          CUMINDEX.TAB.                                       
           INDEX.FMT    - Contains column objects describing the format of    
                          INDEX.TAB and CUMINDEX.TAB.                         
           INDEX.TAB    - Contains an index of this volume.                   
           INDEX.LBL    - Describes the columns and format of INDEX.TAB.      
           INDXINFO.TXT - Describes the contents of this directory.           
                                                                              
                                                                              
  MANAGE   Contains data management information for the DITDOS software.      
           Users do not need to make use of any of these files directly;      
           however, the software which allows DITDOS to extract and           
           reformat data files needs to have this information.                
                                                                              
                                                                              
       key files:                                                             
           *.* - Various files for internal use.                              
                                                                              
                                                                              
  DATA     Contains all data in a branching tree structure of                 
           sub-directories.                                                   
                                                                              
                                                                              
       key files:                                                             
           INFO.TXT     - describes the sub-directories in DATA.              
           DATAINFO.TXT - ASCII text document describing all of the           
                          datasets. This document may contain text from       
                          the files HIGH_RES.ASC and LOW_RES.ASC found        
                          in the DOCUMENT/DATA area                           
                                                                              
                                                                              
  DATA/HIGH_RES Contains the full resolution OIMS dataset, organized          
                into 100-orbit subdirectories.                                
                                                                              
                                                                              
       key files:                                                             
           INFO.TXT     - Describes the directory contents.                   
                                                                              
       key files in 100-orbit subdirectories (ORBxxxx):                       
                                                                              
           OIMSDATA.FMT - Format file describing the data file.               
           ORBxxxx.TAB  - ASCII tabular data file for orbit xxxx.             
           ORBxxxx.LBL  - PDS label for data file ORBxxxx.TAB.                
                                                                              
                                                                              
                                                                              

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Point of Contact


If the user has problems reading this disk or cannot make use of it on one or more of the platforms which should be supported, please contact the PPI pds_operator. This person can be reached in the following ways:

Internet:
   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

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Cognizant Persons


The person most directly responsible for the construction and release of this CD-ROM is Mr. Steven Joy. He was the PPI Node Data Administrator at the time this disk was created and he understands as much about the disk structure and data organization as anyone. The construction of the PDS labels and templates was done by Ms. Eva Fried of the PPI Node and Mr. P. Kahn of the Central Node at JPL. Mr. Mike Martin of JPL has helped to ensure this disk conforms to accepted PDS standards. Dr. Mark Sharlow of the PPI Node has updated some of the labels and other aspects of the disk.

PPI Personnel
 

JPL Personnel
 

Ray Walker / Steve Joy /
Eva Fried / Todd King /
Mark Sharlow
 

P. Kahn / Mike Martin

3845 Slichter Hall
UCLA - IGPP
Los Angeles, CA 90095-1567

4800 Oak Grove Dr.
Mail Stop 525-389
Pasadena, CA 91109

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