List of figures:

Figure 1:  Overview

Figure 2:  External Calibration Source spectra and fits to the Al-K (1.487 keV)
           Ti-K (4.510 keV) and Mn-K (5.898 keV) I1, node1 near readout, the middle
           and the top of node 1 in I1 in pha-space.

Figure 3:  External Calibration Source spectra and fits to the Al-K (1.487 keV)
           Ti-K (4.510 keV) and Mn-K (5.898 keV) I1, node1 near readout, the middle
           and the top of node 1 in I3 in pha-space.

Figure 4:  External Calibration Source spectra and fits to the Al-K (1.487 keV)
           Ti-K (4.510 keV) and Mn-K (5.898 keV) I1, node1 near readout, the middle
           and the top of node 1 in I0 in pha-space.

Figure 5:  External Calibration Source spectra and fits to the Al-K (1.487 keV)
           Ti-K (4.510 keV) and Mn-K (5.898 keV) I1, node1 near readout, the middle
           and the top of node 1 in I0 converting pha to pi using the new 
           pi-on-the-fly algorithm.

Figure 6:  An example of fit uncertainties for I3

Figure 7:  Extracting pulseheight and testing the response using LETG measurements of
           Pks 2155-304 on the ACIS-S array

Figure 8: Testing the soft gain performance of S3 using the PKS 2155-304 LETH data.
          The different colors are measurements at different off-axis positions.

Figure 9: Setup of various LETG measurements of PKS 2155-304 on the ACIS-I array.

Figure 10: Extracted pulseheights and spectral fits in Obsid 3169 from the 
           figure 9 setup.

Figure 11: Testing the gain performance on I3 node 3. The continous data have only
           +/0.05 Angstrom pulseheight widths, the data points have +/- 1 Angstrom. 

Figure 12: The setup of PKS 2155 maesurements on ACIS-S at different SIM positions.
