Deep Impact Thermal-Vacuum 1 HRII Instrument Data

Status: Archived

This volume contains images acquired during the first preflight thermal-vacuum test (TV1) of the High Resolution Imager's Infrared Spectrometer (HRII) for the Deep Impact Mission. Data cover the six days of TV1, from 27 June 2002 through 02 July 2002. TV1 was conducted at Ball Aerospace.

The data total over 2Gb. The individual day directories are presented here as separate tar files for those with sufficient interest and bandwidth to download them in their entirety.

Catalog, document and supporting files (493Kb zip file)
Day 178 (376Mb tar file)
Day 179 (428Mb tar file)
Day 180 (619Mb tar file)
Day 181 (245Mb tar file)
Day 182 (368Mb tar file)
Day 183 (217Mb tar file)

An overview of the volume contents is provided in aareadme.txt, a flat text file with an attached label.

Catalog Files

Catalog files contain the overview information and parameters used in loading the PDS central catalog, specifically, or for developing other interfaces to the data outside of PDS. The information they contain, particularly in their descriptive text fields, should be clear, complete, and understandable to a research user who is not necessarily a mission or instrument specialist. However, mission, instrument host, and instrument catalog files for this archive are intended to be brief because the project team is pursuing permissions from Space Science Reviews to include recently submitted papers in all Deep Impact archival data sets.

These files are located in the catalog/ subdirectory. The directory contents are described by the catinfo.txt file.

Deep Impact Catalog File
Flyby Spacecraft Catalog File
HRII Instrument Catalog File
Data Set Catalog File
Ground Calibration Target File
Tempel 1 Target Target File
References File
Personnel Catalog File

PDS-related volume information is provided in the voldesc.cat file.

Documentation Files

In addition to the small text files located throughout the volume to describe directory contents, some specific documents are provided to assist with understanding the data and processing involved. These files are located in the document/ subdirectory. The directory contents are described by the docinfo.txt file.

In the imagelog/ subdirectory:

tv1_hri.xls contains the image log created during TV1 in Excel spreadsheet format. Image parameters, such as mode and experiment type, were recorded. The log also provides a summary of the experiments performed each day and a list of the experiment types with descriptions. .
tv1_hri.asc contains a flat, comma-delimeted, AScII version of the tv1_hri.xls file.
tv1_hri.lbl contains the PDS label for both the .xls and .asc files.

In the pdsdd/ subdirectory:

pdsdd_di.full is local Planetary Science data dictionary listing for for the Deep Impact thermal-vacuum data sets, including TV1. Locally-defined keywords for Deep Impact have the prefix 'DEEPIMPACT:' in the data labels. Definitions and values of local keywords found in the dat dictionary. The dictionary is ASCII text.
pdsdd_di.idx is index file for the Deep Impact local data dictionary. The dictionary index is ASCII text.
pdsdd_di.lbl contains the PDS label for the .asc file.

In the reports/ subdirectory:

report_yyyymmdd.asc contains eight daily reports produced by test personnel at the end of each test day. Each report summarizes the activity for that day. Reports are in AScII text format.
reports.lbl contains the PDS label for all report files in this subdirectory.

Data Files

Data from TV1 are grouped by instrument (HRII) then by test day of year (YEAR/DOY) in the data/ subdirectory. Data are 2-dimensional FITS images, identified by the extension ".fit". Each FITS file has a detached PDS label, identified by the extension ".fit". There are 2460 FITS images (2.2GB) for TV1:

Index Files

The index/ directory contains an index into the data files included on this volume. All index files are fixed-width, comma-delimited ASCII tables.

indxinfo.txt describes the directory contents.
index.tab is a a fixed-width, delimited index table. For image data on this volume, table entries contain useful image parameters, such as instrument mode and experiment type.
index.lbl is the label for the index file.