- Timestamp:
- 02/09/05 13:34:08 (20 years ago)
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trunk/MagicSoft/TDAS-Extractor/Pedestal.tex
r6301 r6308 388 388 \end{equation} 389 389 390 Figures~\ref{fig:sphe:sphespectrum :2.5} and~\ref{fig:sphe:sphespectrum:4.5} show spectra390 Figures~\ref{fig:sphe:sphespectrum} show spectra 391 391 obtained with the digital filter applied on two different global search windows. 392 392 One can clearly distinguish a pedestal peak (fitted to Gaussian with index 0), … … 399 399 \centering 400 400 \includegraphics[height=0.3\textheight]{SinglePheSpectrum-28-Run38995-WS2.5.eps} 401 \caption{MExtractTimeAndChargeDigitalFilter: Signal spectrum obtained from the extraction 401 \vspace{\floatsep} 402 \includegraphics[height=0.3\textheight]{SinglePheSpectrum-28-Run38995-WS4.5.eps} 403 \vspace{\floatsep} 404 \includegraphics[height=0.3\textheight]{SinglePheSpectrum-28-Run38995-WS8.5.eps} 405 \caption{MExtractTimeAndChargeDigitalFilter: Spectrum obtained from the extraction 402 406 of a pedestal run using a sliding window of 6 FADC slices allowed to move within a window of 403 7 slices.407 7 (top), 9 (center) and 13 slices. 404 408 A pedestal run with galactic star background has been taken and one exemplary pixel (Nr. 100). 405 409 One can clearly see the pedestal contribution and a further part corresponding to one or more 406 410 photo-electrons.} 407 \label{fig:df:sphespectrum:2.5} 408 \vspace{\floatsep} 409 \includegraphics[height=0.3\textheight]{SinglePheSpectrum-28-Run38995-WS4.5.eps} 410 \caption{MExtractTimeAndChargeDigitalFilter: Signal spectrum obtained from the extraction 411 of a pedestal run using a sliding window of 6 FADC slices allowed to move within a window of 412 9 slices. 413 A pedestal run with galactic star background has been taken and one exemplary pixel (Nr. 100). 414 One can clearly see the pedestal contribution and a further part corresponding to one or more 415 photo-electrons.} 416 \label{fig:df:sphespectrum:4.5} 411 \label{fig:df:sphespectrum} 417 412 \end{figure} 418 413 … … 434 429 We estimated the effective window size $WS$ as the sum of the range in which the digital filter 435 430 amplitude weights are greater than 0.5 (1.6 FADC slices) and the global search window minus the 436 size of the window size of the weights (which is 6 FADC slices). Figures~\ref{fig::df:ratiofit:run38995} 437 and~\ref{fig:df:ratiofit:run39258} show the result for two different levels of night-sky background. 438 439 440 431 size of the window size of the weights (which is 6 FADC slices). Figures~\ref{fig::df:ratiofit} 432 show the result for two different levels of night-sky background. 441 433 442 434 \par … … 445 437 \centering 446 438 \includegraphics[height=0.4\textheight]{SinglePheRatio-28-Run38995.eps} 447 \caption{MExtractTimeAndChargeDigitalFilter: Fit to the ratio of the area beneath the pedestal peak and448 the single photo-electron(s) peak(s) with extraction algorithm449 applied on a sliding window of different sizes.450 A pedestal run with extra-galactic star background has been taken and one exemplary pixel (Nr. 100).451 A rate of 0.07 phe/ns has been obtained.}452 \label{fig:df:ratiofit:run38995}453 439 \vspace{\floatsep} 454 440 \includegraphics[height=0.4\textheight]{SinglePheRatio-28-Run39258.eps} 455 441 \caption{MExtractTimeAndChargeDigitalFilter: Fit to the ratio of the area beneath the pedestal peak and 456 the single photo-electron(s) peak(s) withextraction algorithm442 the single and double photo-electron(s) peak(s) with the extraction algorithm 457 443 applied on a sliding window of different sizes. 458 A pedestal run with galactic star background has been taken and one exemplary pixel (Nr. 100). 459 A rate of 0.09 phe/ns has been obtained.} 460 \label{fig:df:ratiofit:run39258} 444 In the top plot, a pedestal run with extra-galactic star background has been taken and in the bottom, 445 a galatic star background. An exemplary pixel (Nr. 100) has been used. 446 Above, a rate of 0.8 phe/ns and below, a rate of 1.0 phe/ns has been obtained.} 447 \label{fig:df:ratiofit} 461 448 \end{figure} 462 449
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