<div dir="ltr"><div>...</div><div>The counts are the number of x-ray photons converted to electrons?</div><div><br></div><div><br></div><div>Thanks<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El mié., 6 de mar. de 2019 a la(s) 15:18, Tim Gruene (<a href="mailto:tim.gruene@psi.ch">tim.gruene@psi.ch</a>) escribió:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Dear Murpholino,<br>
<br>
the unit of intensity is '1' - it is the counts on the detector. The scale is <br>
arbitrary, you can multiply your intensity with any positive number you want, <br>
as long as you don't create an overflow or underflow in the computer program.<br>
As long as you do the same with the sigma-values, your refinement should not <br>
change.<br>
<br>
Best regards,<br>
Tim<br>
<br>
On Wednesday, March 6, 2019 10:00:55 PM CET Murpholino Peligro wrote:<br>
> If I do `phenix.xtriage XDS_ASCII.HKL` I get a log file. In the "Statistics<br>
> for data merging" of this log file I have:<br>
> Resolution: 26.02 - 1.40<br>
> Observations: 44675<br>
> Unique reflections: 16306<br>
> Redundancy: 2.7<br>
> Completeness: 70.37%<br>
> Mean intensity: 1656.8<br>
> Mean I/sigma(I): 19.8<br>
> SigI < 0 (rejected): 644 observations<br>
> R-merge: 0.027<br>
> R-meas: 0.032<br>
> R-pim: 0.017<br>
> <br>
> My question is... what units does Mean intensity has?<br>
> <br>
> Thanks<br>
> Ps I am not sure if this has to do with the detector used which was a CCD<br>
> (type) ADSC QUANTUM 210 (model).<br>
<br>
-- <br>
--<br>
Tim Gruene<br>
Head of the Centre for X-ray Structure Analysis<br>
Faculty of Chemistry<br>
University of Vienna<br>
<br>
Phone: +43-1-4277-70202<br>
<br>
GPG Key ID = A46BEE1A<br>
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