In April-May 2004 the instruments on the Chandra X-ray observatory acquired
an unprecedented deep integration of the Cassiopeia A supernova
remnant, for a total of 1 million seconds. I will present the results of an
initial analysis of the so-called \"jet\" regions of the remnants, and
review analyses of earlier data from the Chandra archive, with a view to
highlighting aspects of the explosion asymmetry that are visible today in
the morphology and spectra of the remnant. In particular from x-ray
spectroscopy, we canshow that the \"jets\" are indeed associated with asymmetry of the
explosion as opposed to asymmetry in the circumstellar medium, and start to
place numbers on the various parameters involved. We also make initial
inferences on asymmetries in the Fe/Si inner ejecta and their possible
relation to the direction of the compact central object natal kick.
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