[JUNGFRAU][DARK][BURST] Convert to float only within each process to save memory for > 4800 trains

Fixing error with memory allocation for dark processing of adaptive burst mode runs.

http://max-exfl016.desy.de:8008//gpfs/exfel/d/cal/caldb_store/xfel/reports/SPB/SPB_IRDA_JF4M/dark/dark_900258_r46_r47_r48_220303_134704.pdf

Description

@mramilli contacted me regarding dark processing failure for SPB adaptive burst mode dark processing.

For normal operation in adaptive burst mode, medium and low runs are of 300 trains X 16 memory cells.

I am not sure why I didn't face this issue while developing this part, but I assume that these runs were not as big as we normally operate.

For the FXE reference run it had the same issue and it failed in the automated tests but I mistakenly overlooked it as all jungfraus failed due to h5file validation as expected.

To avoid this issue I am basically converting the images type inside the memory cells parallel processes. This leads to using half of the previously used memory.

FXE_XAD_JF1M-DARK-BURST_220303_151642.pdf

How Has This Been Tested?

Test with automated test against for all reference runs at: https://git.xfel.eu/detectors/pycalibration/-/merge_requests/610

Relevant Documents (optional)

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

Reviewers

@calibration

notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb

@@ -309,7 +309,7 @@
     "                \" Not enough data to process darks.\")\n",
     "\n",
     "        images = np.transpose(\n",
-    "            instr_dc[instrument_src, \"data.adc\"].ndarray().astype(np.float64), (3, 2, 1, 0))\n",
+    "            instr_dc[instrument_src, \"data.adc\"].ndarray(), (3, 2, 1, 0))\n",
     "        acelltable = np.transpose(instr_dc[instrument_src, \"data.memoryCell\"].ndarray())\n",
     "        gain_vals = np.transpose(\n",
     "            instr_dc[instrument_src, \"data.gain\"].ndarray(), (3, 2, 1, 0))\n",