A radiation image capturing device is provided with plural pixels, a detection unit and a control unit. The pixels are each provided with a sensor portion and a switching element that reads out charges generated at the sensor portion and outputs the charges to a signal line. The detection unit detects the start of irradiation if electronic signals according to the charges satisfy a pre-specified condition for irradiation detection. After the start of irradiation of radiation is detected, the control unit acquires electronic signals corresponding to the charges and determines whether the acquired electronic signals include an electronic signal caused by noise. If the electronic signal caused by noise is included, the control unit controls a reporting unit so as to report this.