Matt, Camilla

As we took new HWS references at 25W last week while troubleshooting HWS (87234, 87252), today we tried to take new references while at 2W today. I did this after the green beams were shuttered around CHECK_VIOLINS_FOR_POWERUP.

However ITMX signal looked very noisy, so Matt and I removed 3 dead pixels, following the wiki. For this to take effect we needed to again take new references, so we said this at 60W just for ITMX. The reported spherical power diopters shouldn't be trusted for ITMX, but relative change in diopters will be fine.