EDIT: Now we know that there wasn't enough sample delivered to TEGA -- see the next post.
I am not quite sure why the many images of the oven over the course of the day were taken. There seem to be two possible reasons: one is that the oven may have been repeatedly vibrated, once per hour or so, to make sure any sample got through the screen. But that doesn't seem very likely, because of their concerns about how fast the ice in the raspings might sublimate. The more likely interpretation is that the images were taken to document what happened to any of the sample that remained on top of the screen. In this zoomed-in view of the animation you can see that the little pile at the lower left corner diminishes in size over the course of the day. So maybe that's sublimation happening. But then again, maybe it isn't, because the little piles of soil on the adjacent (oven 1) doors don't seem to be diminishing in size. So maybe the diminishing pile is the result of further shaking after all. I plan to wait and see what the official announcements are on TEGA status from the mission, then I'll ask those questions.