Does TSI stop collecting data down during the nighttime?
YES. Data are not stored at night, but power remains on to keep moisture off the system. However, you can adjust how low the sun elevation has to be before data acquisition stops. Also, you can adjust the minimum solar zenith angle for processing cloud cover data. This is important because as the sun gets low the images get too dark to resolve the color differences. You can take data down to the horizon, although the image processing worsens as the images get darker.
