Mars 2020 Scanning Habitable Environments with Raman and Luminescence 
for Organics and Chemicals (SHERLOC)
Mars 2020 (Perseverance) Rover Mission
Planetary Data System (PDS) Archive Bundle

Overview
========

This bundle contains the following collections.

  data_raw: Raw (EDR) science data products

  data_intermediate: Partially processed (RDR) science data products 
  
  data_processed: Calibrated (RDR) science data products
  
  data_aci: Image data products from the Autofocus and Context Imager
  (ACI) camera

  data_watson: Image data products from the Wide Angle Topographic
  Sensor for Operations and eNgineering (WATSON) camera

  document: Descriptions of the SHERLOC data products and the archive 
  bundle organization, along with a User's Guide

Data Products and PDS Labels
============================

Every SHERLOC data product is accompanied by a PDS label in a file with 
the same name as the data file, but with the extension ".xml", as PDS 
labels are written in XML (Extended Markup Language). The labels may 
be viewed in a text editor or web browser, preferably one that applies 
special formatting to XML files to make them more readable. The labels 
may also be read by software that can interpret XML. 

Data tables are comma-separated-value tables (.csv), which are text 
files that may be read using the PDS4 Viewer, or any text editor, or 
Microsoft Excel.

Images from the ACI and WATSON cameras are archived primarily in the
collections data_aci_imgops and data_watson_imgops in the m2020_imgops
bundle. For cross-reference, the images are listed as secondary
members of the collections data_aci and data_watson here in the 
m2020_sherloc bundle. 

Documentation
=============
       
The SHERLOC Bundle Software Interface Specification (SIS) in the document 
collection describes the contents, format, and structure of the bundle.
Users unfamiliar with PDS archives are advised to read this document 
first.

The SHERLOC User's Guide in the document collection presents the 
information a data user is most likely to need in order to read
and understand the data. The information is drawn from the following
two documents, the SHERLOC EDR SIS and the SHERLOC RDR SIS, which 
have more detail.

The SHERLOC EDR Software Interface Specification (SIS) in the document 
collection describes the raw data products generated by the SHERLOC 
instrument, including how they are processed and labeled, the format 
of the data products and their labels, and applicable standards.

The SHERLOC RDR Software Interface Specification (SIS) in the document 
collection describes the data, metadata, and browse products derived 
from the SHERLOC raw data.

==============
This bundle was created and archived by the Geosciences Node of the 
Planetary Data System. Questions about this bundle may be directed to 
geosci@wunder.wustl.edu.

Last updated 2021-06-15.