Planck 2013 results
Free Access

Fig. 31


Simulated effect of the ADC nonlinearity on the Survey 1 Survey 2 difference at 143 GHz. Top: difference test of a single realization of the full pipeline, assuming a linear response of the ADC. Middle: the same, but with our current best model of the nonlinearity response of the ADC. This can be compared with the bottom panel, which shows the result of the test applied to the delivered data in exactly the same conditions. This demonstrates that indeed the effect of ADC nonlinearity can explain most of the coherent deviation seen at ≲ 100.

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