DL1 data check

Checks on data runs

The DL1 data check products can be found inside this Browsable directory Always use the most recent version vx.y of the check products which is available for the night of interest. As of March 2024, the most recent version is v0.10.

Inside each of the night-wise directories, e.g. v0.10/20231118, you can find three files: DL1_datacheck_20231118.[html, log, h5], which contain information relative to the whole night of observations (for the sky runs that were successfully processed by lstosa). There is also a pdf subdirectory which contains one .pdf file (with further useful information) per run.

The html DL1_datacheck file

This is the most relevant one for checking the good behaviour of the telescope during the night. It is an interactive webpage showing various quantities (both pixel-wise and camera-wise) averaged over the whole run. Many of the plots have a slider which allows you to select the run number.

Some of the quantities are displayed together

Here is the list of some runs with known problems based on the data checks, which should not be used for higher data analysis

• 20201123/v0.9/tailcut84/dl1_LST-1.Run03038 "CDTS not connected"
• 20210513/v0.9/tailcut84/dl1_LST-1.Run04738 No pedestals (No TIB no CDTS)
• 20220302/v0.9/tailcut84/dl1_LST-1.Run07217 No pedestals
• 20220501/v0.9/tailcut84/dl1_LST-1.Run08053 No pedestals “TIB and CDTS are both 0”
• 20220503/v0.9/tailcut84/dl1_LST-1.Run08091 “Broken Camera Configuration, Data not usable most likely”
• 20220504/v0.9/tailcut84/dl1_LST-1.Run08121 CDTS and TIB are 0
• 20220916/v0.9/tailcut84/dl1_LST-1.Run09228,29,30,31,32 No pedestals according to data check, UCTS and TIB seem k.o. despite no Log message about it
• 20220929/v0.9/tailcut84/dl1_LST-1.Run09419 No pedestals, UCTS and TIB seem k.o. despite no Log message about it
• 20221018/v0.9/tailcut84/dl1_LST-1.Run09706 No pedestals, UCTS and TIB k.o.
• 20221020/v0.9/tailcut84/dl1_LST-1.Run09789 No pedestals, UCTS and TIB k.o.
• 20221024/v0.9/tailcut84/dl1_LST-1.Run09882 No pedestals, UCTS and TIB k.o.
• 20221026/v0.9/tailcut84/dl1_LST-1.Run09925 No pedestals, UCTS and TIB k.o. Not even mentioned in ELOG
• 20221028/v0.9/tailcut84/dl1_LST-1.Run09978 No pedestals, UCTS and TIB k.o.
• 20221101/v0.9/tailcut84/dl1_LST-1.Run10060 No pedestals, UCTS and TIB k.o.
• 20221102/v0.9/tailcut84/dl1_LST-1.Run10106 No pedestals, UCTS and TIB k.o. Runs to test DAQ problems!
• 20221102/v0.9/tailcut84/dl1_LST-1.Run10147 No pedestals, UCTS and TIB k.o. Runs to test DAQ problems!
• 20221102/v0.9/tailcut84/dl1_LST-1.Run10188 No pedestals, UCTS and TIB k.o. Runs to test DAQ problems!
• 20221104/v0.9/tailcut84/dl1_LST-1.Run10304 No pedestals, UCTS and TIB k.o. (DAQ stability tests)
• 20221105/v0.9/tailcut84/dl1_LST-1.Run10353 No pedestals, UCTS and TIB k.o. No message in Log, but anyway this is a high moon run, rate ~1k, Extremely low FF charges (for the whole night actually), and probably very low HV.