A description of Tartarus spectral products is given below. The name of the task that produced each file is given, 
along with a brief description of the product. Products that are missing for this observing sequence are 
indicated by the word "MISSING" in the description.

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file name | task | description
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74077000_sis0_bgd.pha | t_prod | SIS0 background spectrum.
 
74077000_sis0_src_20.pha | t_spec | SIS0 source spectrum with standard grouping and minimum 20 counts per channel.
 
74077000_sis1_bgd.pha | t_prod | SIS1 background spectrum.
 
74077000_sis1_src_20.pha | t_spec | SIS1 source spectrum with standard grouping and minimum 20 counts per channel.
 
74077000_gis2_bgd.pha | t_prod | GIS2 background spectrum.
 
74077000_gis2_src_20.pha | t_spec | GIS2 source spectrum with standard grouping and minimum 20 counts per channel.
 
74077000_gis3_bgd.pha | t_prod | GIS3 background spectrum.
 
74077000_gis3_src_20.pha | t_spec | GIS3 source spectrum with standard grouping and minimum 20 counts per channel.
 
74077000_sis0.rmf | t_spec | SIS0 redistribution matrix.
 
74077000_sis0.arf | t_spec | SIS0 ancillary reasponse file.
 
74077000_sis1.rmf | t_spec | SIS1 redistribution matrix.
 
74077000_sis1.arf | t_spec | SIS1 ancillary reasponse file.
 
74077000_gis2.rmf | t_spec | GIS2 redistribution matrix.
 
74077000_gis2.arf | t_spec | GIS2 ancillary reasponse file.
 
74077000_gis3.rmf | t_spec | GIS3 redistribution matrix.
 
74077000_gis3.arf | t_spec | GIS3 ancillary reasponse file.
 
74077000_webfit_fullf.xcm | t_fits | XSPEC script that reads in spectra and shows the initial 0.6-10 keV power-law model.
 
74077000_webfit_nhfullf.xcm | t_fits | XSPEC script that reads in spectra and shows the initial 0.6-10 keV absorbed power-law model.
 
74077000_webfit_softf.xcm | t_fits | XSPEC script that reads in spectra and shows the initial 0.6-2 keV power-law model.
 
74077000_webfit_nhsoftf.xcm | t_fits | XSPEC script that reads in spectra and shows the initial 0.6-2 keV absorbed power-law model.
 
74077000_webfit_hardf.xcm | t_fits | XSPEC script that reads in spectra and shows the initial 2-10 keV power-law model.
 
74077000_webfit_nhhardf.xcm | t_fits | XSPEC script that reads in spectra and shows the initial 2-10 keV absorbed power-law model.