<div>Dear Andrea,</div> <div> </div> <div>I have had similar problems with empty ASCII outputs. Mostly my problems have been with </div> <div> </div> <div>Source confinement</div> <div>sensitive detector set-up</div> <div>acquisition time</div> <div>boundary overlap with phantom geometries</div> <div> </div> <div>Are you sure your root output or the interfile output produces counts on image? </div> <div> </div> <div>Regards,</div> <div>Sweta</div><p> 
        
        
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