{
  "bibcode": "2021GCN.29647....1F",
  "body": "C. Ferrigno (ISDC/UniGE, Switzerland)\n\nThe INTEGRAL SPI-ACS undergoes a calibration phase each six month \napproximately. Due to technical issues,\nthe alert monitor was not switched off on 2021-03-12 from 4 to 8:20 UT. \nAs a consequence, the series of alerts in this\ntime frame are of instrumental origin. We apologize for the disturbance \nthis might have caused.",
  "circularId": 29647,
  "createdOn": 1615538525000,
  "email": "carlo.Ferrigno@unige.ch",
  "subject": "INTEGRAL SPI-ACS on 2021-03-12 (04)11-08:15) are due to calibration activity",
  "submitter": "Carlo Ferrigno at IAAT/ISDC  <carlo.Ferrigno@unige.ch>"
}