Reading the header of a nur file crashes with python 3.10 / astropy 5.2.1

[fschlueter]

Trying to read the header of a simulation nur file produced with NuRadioMC v2.1.4 with python 3.10 / astropy 5.2.1 (installed via install_dev.py) fails:

....

  File "/Users/felix/software/envs/py310_nuRadio/lib/python3.10/site-packages/astropy/time/formats.py", line 1593, in value
    if self.precision > 0 and str_fmt.endswith("{sec:02d}"):
  File "/Users/felix/software/envs/py310_nuRadio/lib/python3.10/site-packages/astropy/time/formats.py", line 268, in precision
    return self._precision
AttributeError: 'TimeISOT' object has no attribute '_precision'. Did you mean: 'precision'?

When reading the file on a different machine with python 3.6 and astropy 4.1 it works.

[fschlueter]

In #520 I changed what is stored in the event headers. This entails changing to the parsing of the event headers which probably/hopefully solved this issue as well. I will close it. Feel free to reopen if you realised that this issue persist.