From 90713ca761e73828197dbd5721aa2f883d7f7053 Mon Sep 17 00:00:00 2001
From: Martin Teichmann <martin.teichmann@xfel.eu>
Date: Thu, 24 Feb 2022 17:51:01 +0100
Subject: [PATCH] pre-date HRIXS detector images
the HRIXS detector unfortunately gives no proper trainId when the image
is taken, but when the image is received. This pre-dates the image
to when it was actually taken.
---
src/toolbox_scs/load.py | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/toolbox_scs/load.py b/src/toolbox_scs/load.py
index e9c9417..b311ae0 100644
--- a/src/toolbox_scs/load.py
+++ b/src/toolbox_scs/load.py
@@ -169,6 +169,14 @@ def load(proposalNB=None, runNB=None,
if k not in rois:
# no ROIs selection, we read everything
arr = run.get_array(*v.values(), name=k)
+
+ # the HRIXS detector puts the trainId when the image arrives at the
+ # computer. This is much later than it is actually taken. We estimate the
+ # readout time and subract it from the trainId in order to pre-date the
+ # image. 100000 means 1 MHz readout / 10 Hz XFEL rep-rate
+ if f == 'hRIXS_det':
+ arr = arr.assign_coords(trainId=arr['trainId']
+ - int(arr.shape[1] * arr.shape[2] // 100000) - 1)
if len(arr) == 0:
log.warning(f'Empty array for {f}: {v["source"]}, {v["key"]}. '
'Skipping!')
--
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