Archiving LCROSS Ground Observation Data in the Planetary Data System

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• Archiving LCROSS Ground Observation Datain
  thePlanetary Data System
• Edward Guinness and Susan SlavneyPDS Geosciences
  NodeWashington UniversitySt Louis, MO29
  February 2008

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Introduction

• The PDS Geosciences Node is leading the LCROSS
  archiving work for PDS.
• Why we are here
• To introduce ourselves
• Ed Guinness and Susie SlavneyPlanetary Data
  System Geosciences NodeWashington University,
  St. Louis, Missouri
• To introduce the Planetary Data System (PDS)
• To talk about what goes into making a PDS archive
• To answer your questions and help you get started

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What is PDS?

• The Planetary Data Systems job is to...
• Provide help to NASA missions and other data
  providers to organize and document their digital
  planetary data.
• Collect complete, well-documented planetary data
  into archives that are peer-reviewed.
• Ensure the long-term preservation and usability
  of the data.
• Make the planetary data available and useful to
  the science community.
• Provide assistance to the science community in
  using PDS archived data.

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What is PDS?

• How PDS makes data available to the public
• Data archives reside at the PDS Nodes where they
  are maintained by scientists who use the data and
  who can provide expert help.
• Almost all PDS archives are available online for
  downloading.
• PDS provides online search tools to help locate
  data of interest.

PDS Discipline Nodes Atmospheres Node, New Mexico
State University in Las Cruces, New
Mexico Geosciences Node, Washington University in
St. Louis, Missouri Imaging Node, U.S. Geological
Survey in Flagstaff, Arizona and Jet Propulsion
Laboratory in Pasadena, California PPI (Planetary
Plasma Interactions) Node, UCLA, Los Angeles,
California Rings Node, Stanford University,
Stanford, California Small Bodies Node,
University of Maryland, College Park,
Maryland PDS Support Nodes NAIF (Navigation and
Ancillary Information Facility) Node, Jet
Propulsion Laboratory Engineering Node, Jet
Propulsion Laboratory
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Components of a PDS Archive

• Required
• Data products with PDS labels
• Index of data products
• Documentation
• PDS catalog information
• Other documentation
• Optional
• Calibration data and reports, used to understand
  how to generate derived products
• Software to read the data, if needed
• Extra material
• Quick-look or browse versions of data
• Analysis software

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Components of LCROSS PDS Archives

• The LCROSS Science Team will submit 18 data sets
  to PDS
• Nine science instruments
• 1 Visible Context Camera, 2 Near-Infrared
  Cameras, 2 Mid-Infrared Cameras
• 1 Visible Spectrometer, 2 Near-Infrared
  Spectrometers
• 1 Total Visible Luminance Photometer
• Two data sets per instrument
• Raw data products
• Derived (calibrated) data products
• Data sets will include
• PDS-labeled data products
• Index tables
• PDS catalog information
• Data Product Software Interface Specification
• Archive Volume Software Interface Specification

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Components of Ground-Based Observation Archives

• Because ground-based observations are not
  mission-derived, the archive requirements can be
  simplified.
• Data products in PDS-preferred formats with PDS
  labels
• PDS catalog information, including a data set
  description
• If an observatory has archived data with PDS
  before, some information is already in the PDS
  catalog.
• Additional documentation as needed
• What are PDS-preferred formats?
• PDS images as simple binary arrays, without
  proprietary headers or formats
• FITS images are acceptable with some limitations
• Tables in plain ASCII text (preferred) or binary
• Peer reviews
• Review data sets as a group, rather than a
  separate review for each one

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What We Do With Your Data

• LCROSS ground-based observations will be
  considered a PDS Data Set Collection, all
  archived together at the Geosciences Node.
• The collection will be available for downloading
  from our web site (pds-geosciences.wustl.edu).
• The Orbital Data Explorer (ODE) search tool, now
  available for Mars orbital data, will be expanded
  to search lunar data including LRO and LCROSS.
• Try ODE on Mars data at ode.rsl.wustl.edu/mars/.
• To enable useful searches on LCROSS ground-based
  data, consider what common metadata should be
  included in each data set.

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Resources

• PDS Main Web Site pds.nasa.gov
• PDS Geosciences Node Web Site pds-geosciences.wus
  tl.edu
• How-To documents
• Proposers Archive Guide (PAG),
  pds.nasa.gov/documents/pag/
• Archive Preparation Guide (APG),
  pds.nasa.gov/documents/apg/Both documents are
  directed toward mission-generated archives.
• Tools
• Label Design Tool (LTDTool) version 1.0 to be
  released soon beta version now available. Ask
  us.
• Label Validation Tool (Vtool) version 1.1.0 now
  available at pds.nasa.gov/tools/software_download.
  cfm.
• PDS Data Dictionary Lookup Tool online at
  pds.nasa.gov/tools/data_dictionary_lookup.cfm

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Resources

• OLAF Online Archiving Facility at the PDS Small
  Bodies Nodesbn.psi.edu/olaf/OLAF allows online
  automated submissions of spectra, time series,
  and other data in ASCII tables, and images in
  FITS format.
• Examples of observatory-based data sets in PDS
• Lunar radar map pds-geosciences.wustl.edu/missio
  ns/lunar_radar/
• Lunar spectroscopy pds-geosciences.wustl.edu/mis
  sions/lunarspec/
• Shoemaker-Levy 9 archives pdssbn.astro.umd.edu/s
  gnhtml/comets/SL9/
• Contact us