bug fix - wrong eiger filerNumber if imageNumber is not a multiple of 100
Created by: JieNanMAXIV
When the image number is not a multiple of 100, say 120 or 360, the calculate fileNumber is one less than the actual number.
Created by: JieNanMAXIV
When the image number is not a multiple of 100, say 120 or 360, the calculate fileNumber is one less than the actual number.