Chapter 5:
COS Data Analysis

5.1 Data Reduction and Analysis Applications

5.1.1 COS-Specific STSDAS Tasks

5.1.2 FITS Table Tasks

5.1.3 General Spectral Display and Analysis Tasks

5.2 Evaluating Target Acquisitions and Guiding

5.2.1 Types of Target Acquisitions

ACQ/SEARCH

Undispersed Light (Imaging) Acquisitions (ACQ/IMAGE)

Dispersed-Light Acquisitions (ACQ/PEAKD and ACQ/PEAKXD)

5.2.2 Guiding Errors for Single-Guide-Star Mode

5.3 Working with Extracted Spectra

5.3.1 Working With x1d Files in IDL

5.3.2 Working With x1d Files in Python

5.3.3 Working With x1d Files in IRAF/PyRAF

5.3.4 Redoing Spectral Extraction

5.3.5 Splicing Extracted Spectra

5.4 Working with TIME-TAG Data

5.4.1 Displaying TIME-TAG Data in DS9

5.4.2 Filtering Time-Tag Data