https://pct.wiki.uib.no/index.php?action=history&feed=atom&title=Analog_Scan 2026-05-05T00:51:49Z Revision history for this page on the wiki MediaWiki 1.44.2 https://pct.wiki.uib.no/index.php?title=Analog_Scan&diff=966&oldid=prev 2022-01-21T13:20:23Z

<p>Created page with &quot;==Usage== The Analog Scan is used to evaluate the analog front-end of the ALPIDE Sensor. It configure the ALPIDE to have a threshold &#039;&#039;&#039;X&#039;&#039;&#039;. It then injects a charge &#039;&#039;&#039;C1&#039;...&quot;</p> <p><b>New page</b></p><div>==Usage== <br /> <br /> The Analog Scan is used to evaluate the analog front-end of the ALPIDE Sensor. It configure the ALPIDE to have a threshold &#039;&#039;&#039;X&#039;&#039;&#039;. It then injects a charge &#039;&#039;&#039;C1&#039;&#039;&#039;&lt;&lt;&#039;&#039;&#039;X&#039;&#039;&#039; to look for noisy pixels in the pixel-matrix. If a pixel reports a hit when &#039;&#039;&#039;C1&#039;&#039;&#039; is low the pixel is deemed noisy. It then injects a charge &#039;&#039;&#039;C2&#039;&#039;&#039;&gt;&gt;&#039;&#039;&#039;X&#039;&#039;&#039; to look for dead pixels. If a pixel is not responding to the injected charge &#039;&#039;&#039;C2&#039;&#039;&#039; it is deemed to be dead. The test can be used to either test a subset of pixels or the entire pixel-matrix. <br /> <br /> ==How To==<br /> To run the test navigate to the test folder <br /> <br /> &lt;syntaxhighlight lang=&quot;bash&quot;&gt;<br /> $ cd tests<br /> <br /> $ python3 analogscan.py --board=BOARD --tctype=TCTYPE --chips=CHIPS --matrix=MATRIX<br /> &lt;/syntaxhighlight&gt;<br /> <br /> The test outputs a time-and-date.root file located in &#039;&#039;production_tests/results/&#039;&#039;<br /> <br /> This file is automatically analyzed when you run the analogscan.py script. The analysis script is located in<br /> &#039;&#039;production_tests/plot/&#039;&#039;. A plot with the results from the test is provided and stored in &#039;&#039;production_tests/results/plots/&#039;&#039;. The plot will have the following name analog_scan_chip_id_{}.png<br /> The result and classification is also provided in the terminal. The ALPIDE sensor can get &#039;&#039;&#039;GOLD, SILVER, BRONZE&#039;&#039;&#039; or &#039;&#039;&#039;NOK&#039;&#039;&#039; as a classification based on the result of the test. <br /> <br /> The config file for the test is located in &#039;&#039;production_tests/config/&#039;&#039;. The DAC Settings section can be edited in order to alter the performance of the ALPIDE. It is mainly the following settings which are of interest for the test: VCASN, ITHR, IDB, VRESETD.</div>

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