  We analyze the X-Ray emission from the supernova remnant DEM L71 using the
Smoothed Particle Inference (SPI) technique. The high Fe abundance found
appears to confirm the Type Ia origin. Our method allows us to separate the
material ejected in the supernova explosion from the material swept-up by the
supernova shock wave. We are able to calculate the total mass of this swept-up
material to be about 228 $\pm$ 23 M$_{\odot}$. We plot the posterior
distribution for the number density parameter, and create a map of the density
structure within the remnant. While the observed density shows substantial
variations, we find our results are generally consistent with a two-dimensional
hydrodynamical model of the remnant that we have run. Assuming the ejected
material arises from a Type Ia explosion, with no hydrogen present, we use the
predicted yields from Type Ia models available in the literature to
characterize the emitting gas. We find that the abundance of various elements
match those predicted by deflagration to detonation transition (DDT) models.
Our results, compatible with the Type Ia scenario, highlight the complexity of
the remnant and the nature of the surrounding medium.
