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As expected, this task generated a total of 30 Si:As DCEs on the star and 7 more in the stim IER. Using the scan mirror dependent (s.m.d.) flats, the dark spots caused by dusts on pick-up mirror have been correctedly flat-fielded. Campaign J was in the middle of solar storm (X-class). There are some high energe cosmic hit on the DCE 18, which caused the readout coloum of the hit has slight higher values than the other columns resulting jail-bar pattern on the data as shown in Figure 1. Other huge cosmic rays on the 24 um data are shown in here and here .

Figure 1: Huge Cosmic Ray hit in DCE 18 (image on the left) causing the jail-bar pattern on the data and the latent image on the DCE 19.

System Throughput

The total counts from the star in all 30 DCEs are computed using IDL program with the same aperture parameters as the ones in previous campaigns. For comparison, the aperture photometry are computed both on the data with regular flat and with s.m.d. flats. The one with s.m.d. flats gives the counts of 6.929e+04 ± 1.226e+03 (1.77%) DN/s (ignoring the boost DCEs), and the one with regular flat gives the counts of 6.977e+04 ± 1.160e3 (1.66%) DN/s. The individual DCE measurement are both plotted in Figure 2.

Figure 2: Counts for HD159330 as a function of DCE number for different flats.

Stimulator

The stimulator IER behaved as expected, producing 7 images of the flat-field stimulator. The data were processed with mips_sloper in a fashion identical to that described above for the sky images. Figure 3 shows the historgram over the whole array in individual DCE. The 5-sigmaclip mean value is also listed in each DCE. (Note that 1st DCE has SUR on-board algorithm wrong, so the statistics from DCE#1 should be ignored.)

Figure 3: Histrogram on the Stim over DCEs