  The hot ISM in early type galaxies (ETGs) plays a crucial role in
understanding their formation and evolution. The structural features of the hot
gas identified by Chandra observations point to key evolutionary mechanisms,
(e.g., AGN and stellar feedback, merging history). In our Chandra Galaxy Atlas
(CGA) project, taking full advantage of the Chandra capabilities, we
systematically analyzed the archival Chandra data of 70 ETGs and produced
uniform data products for the hot gas properties. The primary data products are
spatially resolved 2D spectral maps of the hot gas from individual galaxies. We
emphasize that new features can be identified in the spectral maps which are
not readily visible in the surface brightness maps. The high-level images can
be viewed at the dedicated CGA website, and the CGA data products can be
downloaded to compare with data at other wavelengths and to perform further
analyses. Utilizing our data products, we address a few focused science topics.
