The INTEGRAL Radiation Environment Monitor (IREM) performs a wide range of radiation monitoring functions in-orbit and downloads the results via the INTEGRAL spacecraft telemetry to the ground.
The IREM data are part of the spacecraft ``housekeeping'' stream and, as such, are made available to all users via the ISDC.
The IREM unit measures energetic electrons, protons, and heavy ions, as well as the total accumulated dose, encountered during the mission. This information is made available in real time to the other experiments on-board the INTEGRAL satellite and, in due course, implemented as a part of the overall Standard Radiation Environment Monitors (SREM) measurement data base at the Paul Scherrer Institute, Switzerland, together with data from SREM units on other missions. Up to now, the SREMs have allowed to accumulate valuable new results concerning, for example, flux directionality, electron belt dynamism, and seasonal changes.