In these plots the oscillations have been removed by extrapolating the steady oscillations seen before the transit. The remaining temperature is plotted as a function of time expressed in Gaia revolutions. One clearly sees that the temperature is dropping almost immediately as soon as the Moon enters the solar disk, indicating that there is no thermal inertia in these non-insulated locations. The drop reached 1.5°C as it was predicted from the annual change of the equilibrium temperature and for a flux drop of 5%. The small remaining wiggles before the event are the residuals between the oscillations and the mathematical model used to remove the regular changes. The shape of the curve is not symmetrical with respect to its lowest point, a feature not yet understood.

Due to insulation these temperature variations in the payload module are so small that they cannot be measured with the accuracy of the thermistor readout electronics. However, the astrometric daily analysis shows a change in the so called geometric calibration. This is an indication that tiny changes in the payload module took place during the eclipse event as expected. Nevertheless, by applying the daily geometric calibration it is possible to verify that the astrometric quality of the measurements did not degrade during the eclipse.