def if_failed(self):
    obs_failed_file = os.path.join(self.results_dir, self.utc, 'obs.failed')
    return os.path.exists(obs_failed_file)
def if_failed(self):
    obs_failed_file = os.path.join(self.results_dir, self.utc, 'obs.failed')
    return os.path.exists(obs_failed_file)