Chapter 2:
STIS Data Structure

2.1 Overview

2.2 Types of STIS Files

2.2.1 Trailer Files

2.2.2 Understanding Associations

2.3 STIS File Structures

2.3.1 STIS FITS Image Extension Files

2.3.2 STIS FITS Table Extension Files

2.4 Headers, Keywords, and Relationship to Phase II

2.5 Error and Data Quality Array

2.5.1 The Error Array

2.5.2 Data Quality Flagging

2.6 STIS Coordinate Systems

2.6.1 Spacecraft, User, and Aperture Frames

2.6.2 CCD Binned Pixel and Sub-array Coordinates

2.7 STIS Paper Products