Simulating Data:

	Set "sim" keywords: See http://sprg.ssl.berkeley.edu/~jimm/hessi/sim_keywords_20010110.html
	Also http://sprg.ssl.berkeley.edu/~cmj/hessi/doc.html
	Sample:
	IDL> a = [0.1, 1.0, 0.1, 3.0, 60.0, 3.0, 10.0, 1.5]
	IDL> energy = 3.0+indgen(497)
	IDL> photon_flux = f_vth_bpow(e, a)
	IDL> o = obj_new('hsi_eventlist') (or o = obj_new('hsi_image'))
	IDL> o -> set, sim_background = 1.0, sim_ut_ref = anytim('31-aug-2000 0:00'), sim_xyoffset = [-800.0, 200.0], sim_energy_band = [3.0, 500.0], sim_a2d_index_mask = bytarr(27)+1, sim_use_spectrum = 1, sim_atten_state = 1, sim_photon_flux_ptr = ptr_new(photon_flux), sim_photon_energy_ptr = ptr_new(energy)

Notes:

 

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