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## Loading the Data into ISIS

Once a data file has been created and ISIS has been started the data can be loaded into ISIS,

`isis>load_data("acisf1235_000N001_pha2.fits");`

which results in

    Reading: ............
    *** invalid uncertainties replaced

    Current Spectrum List:
     id  instrument   m prt src    use/nbins   A      totcts   exp(ksec) clr  target
      1   HETG-ACIS  -3  1   1    6972/ 6972   -  6.1000e+01    15.800   -   CAPELLA
      2   HETG-ACIS  -2  1   1    6972/ 6972   -  1.1100e+02    15.800   -   CAPELLA
      3   HETG-ACIS  -1  1   1    6972/ 6972   -  3.0010e+03    15.800   -   CAPELLA
      4   HETG-ACIS   1  1   1    6972/ 6972   -  2.5470e+03    15.800   -   CAPELLA
      5   HETG-ACIS   2  1   1    6972/ 6972   -  1.1300e+02    15.800   -   CAPELLA
      6   HETG-ACIS   3  1   1    6972/ 6972   -  6.3000e+01    15.800   -   CAPELLA
      7   HETG-ACIS  -3  2   1    6972/ 6972   -  6.1400e+02    15.800   -   CAPELLA
      8   HETG-ACIS  -2  2   1    6972/ 6972   -  8.8900e+02    15.800   -   CAPELLA
      9   HETG-ACIS  -1  2   1    6972/ 6972   -  1.3810e+04    15.800   -   CAPELLA
     10   HETG-ACIS   1  2   1    6972/ 6972   -  8.1050e+03    15.800   -   CAPELLA
     11   HETG-ACIS   2  2   1    6972/ 6972   -  3.6200e+02    15.800   -   CAPELLA
     12   HETG-ACIS   3  2   1    6972/ 6972   -  2.4800e+02    15.800   -   CAPELLA

    Integer_Type[12]

being output to the screen. In this example we have both the HEG spectra, prt 1, and the MEG spectra, prt 2, for orders -3,-2,-1,1,2,3.