Merged Chandra broad band (0.5–7.0 keV) flux image with extraction regions used for spectral extraction overlaid. The image is unbinned yet smoothed with a Gaussian function with radius r = 3 pixel and sigma σ = 1.5 image pixels. Weighted spectra have been extracted from tail (solid cyan) region with pulsar (r = 3″) excluded, using bkg1 region (dashed green) as background region, and from outflow region (solid yellow) using bkg2 region (dashed green) as background region.