Actually they call the individual detectors DOMs-Digital Optical Modules. Each string has 60 DOMs on it (plus 4 DOMs on the surface config IceTop) and altogether there will be 86 strings. Right now there are 79. Of course they calibrate, test, re-test before deployment, and troubleshoot when there are problems, but yeah if a DOM is out it's out.
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Actually they call the individual detectors DOMs-Digital Optical Modules. Each string has 60 DOMs on it (plus 4 DOMs on the surface config IceTop) and altogether there will be 86 strings. Right now there are 79. Of course they calibrate, test, re-test before deployment, and troubleshoot when there are problems, but yeah if a DOM is out it's out.
An event reconstruction from the 79 string detector configuration https://blog.icecube.wisc.edu/?p=1355