Introduction
Use the following forms to select the options, date ranges, and the parameters you are interested in, then click the 'View' button.
The start and end time fields are fairly flexible, and you can use constructions such as '2 days ago', 'now', as well as the more usual date specifiers.
If you do find a bug, please let me know. My email address is Mark Cooke <mpc@star.sr.bham.ac.uk>.
Camera CCD Temperatures
The analogue monitors are trended for the last 7 days on a 1 second resolution, and for 30 days at 1 minute resolution, and for 10 years at 10 minute resolution.
Camera CCD Thermal Control
This graph shows heater switching. The heater power times are indicated with a vertical line up to the camera temperature trace. This graph database holds 6 months of data, at a 1 second resolution.
Data Processor Unit
The main processor unit has a number of sensors available.
Observation Housekeeping Trends
Camera telemetry quick look values are stored on a 15 minute basis.
Observation Binning Modes
Camera telemetry quick look values are stored on a 15 minute basis.
Software Performance Counters
SMEI onboard software monitors a number of instrument states with counters returned in ID=9 housekeeping. This graph lets you view these. Please note that some post-processing of the data is done, and for cameras that are disabled, the framestart value is set to '-1000', rather than left at 65535.
Command and Configuration
SMEI command and status monitors are returned in ID=7 housekeeping. This graph lets you view these.
Bright Object and Shutter Telemetry
SMEI command and status monitors are returned in ID=7 housekeeping. This graph lets you view the bright object and shutter open sensor monitors.
Mission Events
I have listed a few interesting graphs along with the corresponding mission event below. Each one will open in a new window.
- Camera Door Openning and end of CCD contamination control temperature setting.
- Camera Baffle Temperature changes after openning each camera door.
- Camera 3 Radiator temperature reaches -12C when vehicle is in nominal orientation.
- The same plot for camera 2 shows much colder temperatures.
- Controlling the camera 3 ccd to -2C and +3C shows the linkage to the radiator temperature.
- Reduction in CCD temperatures to find lower limits, and subsequent restabilisation.
- Camera Frame Data Loss and Resolution.

Last Updated: 28-Jan-2004