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Table 9:

Impact of quantisation and compression on white noise sensitivity.
    M-00     M-01     S-10     S-11  
  $\sigma$1 $\sigma_q$2 $\Delta$3 $\sigma$ $\sigma_q$ $\Delta$ $\sigma$ $\sigma_q$ $\Delta$ $\sigma$ $\sigma_q$ $\Delta$
70 GHz                        
LFI18 $\ldots$ $\ldots$ $\ldots$ $\ldots$ $\ldots$ $\ldots$ 38.93 39.22 0.74% 31.07 31.39 1.02%
LFI19 33.50 33.68 0.55% 34.00 34.13 0.39% 25.68 25.85 0.63% 27.48 27.67 0.71%
LFI20 31.08 31.17 0.31% 31.20 31.37 0.54% 44.77 45.14 0.83% 41.95 42.23 0.67%
LFI21 33.77 33.94 0.51% 32.27 32.39 0.35% 26.50 26.67 0.62% 25.63 25.86 0.87%
LFI22 17.03 17.15 0.67% 19.29 19.41 0.61% 20.99 21.05 0.28% 23.94 24.06 0.49%
LFI23 37.84 38.01 0.44% 41.00 41.25 0.61% 23.76 24.01 1.04% 12.15 12.19 0.36%
44 GHz                        
LFI24 $\ldots$ $\ldots$ $\ldots$ $\ldots$ $\ldots$ $\ldots$ 5.95 5.97 0.25% 5.32 5.35 0.45%
LFI25 7.50 7.54 0.50% 7.53 7.55 0.30% 9.34 9.37 0.35% 6.93 6.96 0.43%
LFI264 6.04 6.06 0.32% 6.18 6.20 0.31% 8.81 8.84 0.28% $\ldots$ $\ldots$ $\ldots$
30 GHz                        
LFI27 62.34 62.67 0.52% 65.62 65.97 0.53% 56.19 56.40 0.37% 52.48 52.59 0.22%
LFI28 52.96 53.27 0.59% 68.34 68.58 0.34% 46.77 46.94 0.35% 44.15 44.24 0.20%

Notes.  (1) White noise sensitivity before quantisation and compression in $\mu {\rm V}/\sqrt{\rm Hz}$. (2) White noise sensitivity after quantisation and compression in $\mu {\rm V}/\sqrt{\rm Hz}$. (3) Percent relative difference: $\Delta = 100\times (\sigma_q-\sigma)/\sigma$. (4) No values are given for LFI26S-11, for which quantisation and compression parameters were set to incorrect values because of a problem in the software optimisation procedure that was identified and solved after the calibration campaign.


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