Radiation image capturing apparatus and radiation image capturing system

A radiation image capturing apparatus comprising:

• a plurality of radiation detecting elements which are positioned two-dimensionally;
• a switch element which holds charge in the radiation detecting elements;
• a scanning line which drives the switch element;
• a signal line which is connected through the switch element;
• a bias line which is connected to the radiation detecting elements;
• a hardware processor which detects that radiation is irradiated;
• and
• a reader which reads image data based on detection of irradiation of radiation by the hardware processor, the image data being based on an amount of charge accumulated in the plurality of radiation detecting elements,
• wherein:
• the hardware processor samples a signal a plurality of times, the signal being based on at least one of currents flowing in the signal line, the bias line, the scanning line, and the detector line within a predetermined term, and the hardware processor obtains a digital signal,
• the hardware processor calculates the obtained digital signal,
• the hardware processor determines whether the radiation image capturing apparatus is under a disturbance environment based on a result of calculation,
• the hardware processor performs the detection operation and determines, in parallel, whether the radiation image capturing apparatus is placed under the disturbance environment, and
• the hardware processor discontinues the detection operation when it is determined that the radiation image capturing apparatus is under the disturbance environment while the detection operation is performed.