HP3 radiometer data gathered on Mars that is used to correct the open cover radiometric calibration data in dataset 10 for background drift.

This data was acquired at the InSight landing site on Mars and is used to estimate the signal received from the Mars surface during open cover calibration. The radiometer observes both calibration target and surface at the same time. This table contains observations without a stimulus from the calibration target on days and local times close to those data with a stimulus from the calibration target (dataset 10). Subtracting these observations interpolated to the local time of calibration observations provides an estimate of the signal from the calibration target without contribution from the Mars surface.<br><br>The data file has columns for start and end time of measurements at each calibration point in seconds since the epoch J2000 and number of data vectors averaged. The other columns are <br>UtcXY : thermopile voltage where X indicates FoV and Y indicates sensor numberTrefXY : thermopile temperature where X indicates FoV and Y indicates sensor numberTsh : radiometer sensor head temperatureTct : calibration target temperaturePsh : sensor head heater powerPct: calibration target heater powerTbb: cavity blackbody temperatureTenv: thermal shroud temperature<br>The columns for cavity blackbody and environment temperature are included so that the table format is identical with the ground calibration data. The variables are provided as unknown ('UNK').<br>Raw data can also be found on the Planetary Data System:https://pds-geosciences.wustl.edu/missions/insight/hp3rad.htm