Gyroscope noise levels and readout correlations

Noise characteristics for the active gyroscopes differed greatly, with at some point differences in noise level of a factor 10. As the gyroscopes were part of the on-board attitude control, this indirectly affected the accuracy of the on-board attitude and the centring of the IDT on the images. However, this was still all well within reasonable margins, and has not affected the data quality.

Gyro noise level and correlations

The noise-correlation pattern is a reflection of how accurate the readouts have been for these rate-integrating gyroscopes, where the input axis position is corrected for the readout value on a time scale of about 1 to 2 seconds.