Index: trunk/MagicSoft/TDAS-Extractor/23LedsBlue_Pulse_Inner.eps
===================================================================
--- trunk/MagicSoft/TDAS-Extractor/23LedsBlue_Pulse_Inner.eps	(revision 5783)
+++ trunk/MagicSoft/TDAS-Extractor/23LedsBlue_Pulse_Inner.eps	(revision 5784)
@@ -1,7 +1,7 @@
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-%%Title: 23LedsBlue_Pulse.eps: c1
+%%BoundingBox:  0 0 567 544
+%%Title: MExtractTimeAndChargeDigitalFilter_23 Leds Blue.eps: Signal example
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-%%CreationDate: Mon Dec 20 12:28:43 2004
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Index: trunk/MagicSoft/TDAS-Extractor/Performance.tex
===================================================================
--- trunk/MagicSoft/TDAS-Extractor/Performance.tex	(revision 5783)
+++ trunk/MagicSoft/TDAS-Extractor/Performance.tex	(revision 5784)
@@ -4,5 +4,5 @@
 
 In this section, we describe the tests performed using light pulses of different colour, 
-pulse shapes and intensities with the MAGIC calibration pulser box. 
+pulse shapes and intensities with the MAGIC LED Calibration Pulser Box \cite{hardware-manual}. 
 \par
 The LED pulser system is able to provide fast light pulses of 3--4\,ns FWHM 
@@ -12,18 +12,18 @@
 \begin{table}[htp]
 \centering
-\begin{tabular}{|c|c|c|c|c|c|}
-\hline
-\hline
-\multicolumn{6}{|c|}{The possible pulsed light colours} \\
-\hline
-\hline
-Colour &  Wavelength & Spectral Width & Min. Nr. &  Max. Nr. & Secondary \\
-      & [nm]         & [nm]           &  Phe's   &  Phe's    & Pulses  \\
-\hline
-Green &  520      & 40      & 6          &  120      & yes   \\
-\hline
-Blue &  460       & 30      & 6          &  500      & yes   \\
-\hline
-UV   &  375       & 12      & 3          &  50       & no  \\ 
+\begin{tabular}{|c|c|c|c|c|c|c|}
+\hline
+\hline
+\multicolumn{7}{|c|}{The possible pulsed light colours} \\
+\hline
+\hline
+Colour &  Wavelength & Spectral Width & Min. Nr. &  Max. Nr. & Secondary & FWHM \\
+      & [nm]         & [nm]           &  Phe's   &  Phe's    & Pulses  &  Pulse [ns]\\
+\hline
+Green &  520      & 40      & 6          &  120      & yes  & 3--4  \\
+\hline
+Blue &  460       & 30      & 6          &  500      & yes  & 3--4 \\
+\hline
+UV   &  375       & 12      & 3          &  50       & no   & 2--3 \\ 
 \hline
 \hline
@@ -40,5 +40,5 @@
 One can see that the very stable UV-pulses are unfortunately only available in such intensities as to 
 not saturate the high-gain readout channel. However, the brightest combination of light pulses easily 
-saturates all channels in the camera, but does not reach a saturation of the low-gain channel.
+saturates all channels in the camera, but does not reach a saturation of the low-gain readout.
 \par
 Our tests can be classified into three subsections:
@@ -49,7 +49,7 @@
 of the expected Gaussian distribution.
 \item Number of photo-electrons: These tests measure the reconstructed numbers of photo-electrons, their 
-spread over the camera and the ratio of the obtained mean value for outer and inner pixels.
-\item Linearity tests: These test the linearity of the extractor with respect to pulses of different intensity 
-and colour.
+spread over the camera and the ratio of the obtained mean values for outer and inner pixels, respectively.
+\item Linearity tests: These tests measure the linearity of the extractor with respect to pulses of 
+different intensity and colour.
 \item Time resolution: These tests show the time resolution and stability obtained with different 
 intensities and colours.
@@ -71,8 +71,10 @@
 \includegraphics[height=0.25\textheight]{23LedsBlue_Pulse_Inner.eps}
 \includegraphics[height=0.25\textheight]{23LedsBlue_Pulse_Outer.eps}
-\caption{Example of a calibration pulse from the highest available intensity (23\,Leds Blue). 
+\caption{Example of a calibration pulse from the highest available mono-chromatic intensity (23\,Leds Blue). 
 The left plot shows the signal obtained in an inner pixel, the right one the signal in an outer pixel.
-One the left side, the (saturated) high-gain channel is visible, on the right side, the delayed low-gain 
-pulse appears. Note that on the left side, there is a secondary pulses visible in the tail of the 
+One the left side of both plots, the (saturated) high-gain channel is visible, 
+on the right side from FADC slice 18 on, 
+the delayed low-gain 
+pulse appears. Note that in the left plot, there is a secondary pulses visible in the tail of the 
 high-gain pulse. }
 \label{fig:pulseexample23ledblue}
@@ -81,8 +83,10 @@
 We used data taken on the 7$^{th}$ of June, 2004 with different pulser LED combinations, each taken with 
 16384 events. The corresponding run numbers range from nr. 31741 to 31772. This data was taken before the 
-latest camera repair access which replaced about 2\% of the pixels known to be mal-functionning at that time.
-Thus, there is a lower limit to the number of un-calibrated pixels of about 1.5--2\%.
-\par
-Although, we had looked at and tested all colour and extractor combinations resulting from these data, 
+latest camera repair access which resulted in a replacement of about 2\% of the pixels known to be 
+mal-functionning at that time.
+Thus, there is a lower limit to the number of un-calibrated pixels of about 1.5--2\% known 
+mal-functionning pixels.
+\par
+Although we had looked at and tested all colour and extractor combinations resulting from these data, 
 we refrain ourselves to show here only exemplary behaviour and results of extractors. 
 All plots, including those which are not displayed in this TDAS, can be retrieved from the following 
@@ -103,5 +107,6 @@
 \begin{enumerate}
 \item The reconstructed mean signal is less than 2.5 times the extractor resolution $R$ from zero. 
-(2.5 Pedestal RMS in the case of the simple fixed window extractors). This criterium cuts out 
+(2.5 Pedestal RMS in the case of the simple fixed window extractors, see section~\ref{sec:pedestals}). 
+This criterium essentially cuts out 
 dead pixels.
 \item The reconstructed mean signal error is smaller than its value. This criterium cuts out 
@@ -109,12 +114,19 @@
 criterium cuts out ``ringing'' pixels or mal-functionning extractors. 
 \item The reconstructed mean number of photo-electrons lies 4.5 sigma outside 
-the distribution of photo-electrons obtained with the inner or outer pixels in the camera. 
-\item All reconstructed negative mean signal, signal sigma's and mean numbers of photo-electrons 
-smaller than one.
+the distribution of photo-electrons obtained with the inner or outer pixels in the camera, respectively. 
+This criterium cuts out pixels channels with apparently deviating (hardware) behaviour compared to 
+the rest of the camera readout.
+\item All pixels with reconstructed negative mean signal or with a 
+mean numbers of photo-electrons smaller than one. Pixels with a negative pedestal RMS subtracted 
+sigma occur, especially when stars are focussed onto that pixel during the pedestal taking (resulting 
+in a large pedestal RMS), but have moved to another pixel during the calibration run. In this case, the 
+number of photo-electrons would result artificially negative. If these 
+channels do not show any other deviating behaviour, their number of photo-electrons gets replaced by the 
+mean number of photo-electrons in the camera, and the channel is further calibrated as normal.
 \end{enumerate}
 
 Moreover, the number of events are counted which have been reconstructed outside a 5 sigma region 
 from the mean signal. These events are called ``outliers''. Figure~\ref{fig:outlier} shows a typical 
-outlier obtained with the digital filter.
+outlier obtained with the digital filter applied to a low-gain signal.
 
 \begin{figure}[htp]
@@ -166,5 +178,5 @@
 One can see that in general, big extraction windows raise the 
 number of un-calibrated pixels and are thus less stable. Especially for the very low-intensity 
-$1LedUV$-pulse, the big extraction windows summing 8 or more slices, cannot calibrate more than 50\% 
+$1Led\,UV$-pulse, the big extraction windows summing 8 or more slices, cannot calibrate more than 50\% 
 of the inner pixels (fig.~\ref{fig:unsuited:1leduv}). This is an expected behavior since big windows 
 add up more noise which in turn makes the for the small signal more difficult.
@@ -650,3 +662,4 @@
 %%% TeX-master: "MAGIC_signal_reco"
 %%% TeX-master: "MAGIC_signal_reco"
+%%% TeX-master: "MAGIC_signal_reco"
 %%% End: