Make simulation of Cas A in Si for use in observation planning, see casa_sim.txt.
Make some pretty pictures of the real and simulated FITS events files using hydra/S-Lang routine casa_images.sl.
| Real obsid 1046 data: ( 70 ks ) Color coding ranges (keV): R = 0.50-1.60, G = 1.75-2.00, B = 2.02-2.30  | Simulated '1046 data: (15 ks Si equiv.) Image based on Si-range only. Same color coding as real data.  |
| Si line images R = low side Si XIII, G = high-side Si XIII  | Simulation version (no Doppler) |
| Obsid 1046 in just the Si-peak 629.6 x10^3 events in Si peak.  | Simulated version. 137.6 x10^3 events in Si peak for 5M rays input.  |
| Real 1046 Dispersed image: (color coding as in first image above)  | Simulated 1046 Dispersed image: (color coding as in first image above)  |
3D Views: Rotating the Regions:
Color-coded quantity: N-S axis
rotationE-W axis
rotationVelocity .mov .mov Big movie.mov Temperature .mov .mov Density, n_e .mov .mov t_shock = tau / n_e .mov .mov
It is useful to make a color-coded pileup image for an extended source to show the local level of pileup, e.g., for the HETG zeroth-order of Cas A (obsid 1046):
Click image for larger version
For details, see: CasA_zo_pileup.txt