If you wanted to strip away local Earth culture baggage, you would want to avoid using minutes, hours, days, weeks, months and years, as these relate to Earth's movements. But I am not a working astronomer so I don't know if that's the motive.

... or "roughly three months" for that matter.

I wonder, in the final days and hours, what the amount of impact individual seconds have on a given image.

Do the sensors record the full stream of data, and then perform calculations to produce the exposure?

If so, how many bytes does one pixel-second occupy? How high is the dynamic range for x-rays? Figure maybe a sensor can operate like a high-speed camera, and record many hundreds of frames per second?