Data are taken with an internal lamp to measure the transmission of the PIONIER instrument.
Only the science outputs are illuminated.

The first sets of plots (KAPPA_High_Sensitivity KAPPA_Medium_Sensitivity and KAPPA) show the interfermetric transmission of PIONIER (ratio of the transmission between the pairs of interferometric arms), also called KAPPA_MATRIX.
The last set of plots (Kappa_beam_High_Sensitivity and Kappa_beam) shows the transmission of the individual arms.

- "KAPPA_High_Sensitivity" plots show this ratio for the GRISM and for the 6 combinations of baselines :12,13,14,23,24,34. The FREE data cannot be taken because of saturation
- "KAPPA_Medium_Sensitivity" plots show this ratio for the 2 dispersive elements GRISM and FREE and for the 6 combinations of baselines :12,13,14,23,24,34
- "KAPPA" show the same information than in the previous plot for the High_Sensitivity, Medium_Sensitivity and Low_Sensitivity
- "KAPPA_beam_High_Sensitivity" shows the number of counts in the different arms (1 to 4) of PIONIER for the High Sensitivity mode. The saturation is around 4000 ADUs
- "KAPPA_beam" shows the number of counts in the different arms (1 to 4) of PIONIERi for the 3 Sensitivity modes.
The saturation is around 4000 ADUs

The same data are also taken on sky and the Interferometric transmission is then calculated on the full optical path (from the telescope to the detector) This is shown under "Intf Transmission (sky)".

The detector polarization voltages (DET.POLAR) are :
High Sensitivity : 7100 mV
Medium_ Sensitivity: 5000 mV
Low_Sensitivity : 1000 mV