Changes for page The FLASH HDF5 structure

Last modified by sndueste on 2025/02/06 10:55
From version 40.1
edited by sndueste
on 2021/02/09 14:35
Change comment: There is no comment for this version
To version 44.1
edited by cpassow
on 2021/02/10 09:30
Change comment: There is no comment for this version

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1 1  == Contents ==
2 2  
3 3  
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42 42  The HDF hierarchy is almost identical in all formats. While in the the recent format each DAQ channel contains the data sets "value" and "index", the deprecated format had one data set for each DAQ channel. The deprecated formats supplies no time axis parameters for spectra data types.
43 43  {{/expand}}
44 44  
45 -== HDF excerpt: ==
48 +=== HDF excerpt: ===
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46 46  
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54 +* ADC data as example for **fast** **data** (10 Hz):           
55 +
47 47  \\
48 48  
49 -ADC data as example for **fast** **data** (10 Hz):
58 +[[image:attach:image2020-11-16_15-26-28.png||height="250"]]
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50 50  
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62 +* The //average// FEL pulse energy as example for the **slow** **data** (different e.g. 1 Hz):
63 +
64 + ( every 10th train ID is listed in the HDF group "index")
65 +
51 51  \\
52 52  
53 -[[image:attach:image2020-11-16_15-26-28.png||height="250"]]
68 +[[image:attach:image2020-11-16_15-31-45.png||height="250"]]
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54 54  
71 +{{layout-cell}}
72 +* (((
73 +//zraw// group contains the **original DAQ (DOOCS) names**
74 +)))
75 +
76 + of the properties saved in the DESY internal raw format. (For experts)
77 +
55 55  \\
56 56  
80 +[[image:attach:image2020-11-16_16-26-3.png||height="400"]]
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57 57  {{info title="Sample scripts in python"}}
58 -== Reference implementation (Python) ==
87 +=== Reference implementation (Python) ===
59 59  
60 60  [[~[~[image:attach:binder_badge.png~|~|thumbnail="true" width="120"~]~]>>url:https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.desy.de%2Fchristopher.passow%2Fflash-daq-hdf/master||shape="rect"]]
61 61  
62 62  (% class="Object" %)[[https:~~/~~/gitlab.desy.de/christopher.passow/flash-daq-hdf>>url:https://gitlab.desy.de/christopher.passow/flash-daq-hdf||shape="rect"]]
63 63  {{/info}}
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64 64  
65 -\\
66 -
67 -\\
68 -
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69 69  == The discontinued (till 2021) FLASH HDF5 structure ==
70 70  
71 71  The photon diagnostic, electron diagnostic and beamline information as well as the information about the pump-probe laser and the infrastructure offered for users (GHz/MHz ADCs) can be included in one HDF5 file which is organized according to train IDs. The general structure is:
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84 84  
85 85  \\
86 86  
87 -=== HDF5 example files ===
116 +=== HDF5 example files (old format) ===
88 88  
89 89  Here we have a few HDF5 samples (User data combined with Photon diagnostics data) from a few beamtimes showing the different kind options.
90 90  
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1078 1078  
1079 1079  \\
1080 1080  
1081 -(% class="wrapped" %)
1082 1082  |=(((
1083 1083  earlier HDF path (vers. 0.2)
1084 1084  )))|=(((
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1181 1181  
1182 1182  \\
1183 1183  
1184 -== Example code showing how to access HDF5 files ==
1185 -
1186 -\\
1187 -
1188 1188  == HDF5 and DOOCS ==
1189 1189  
1190 1190  Here is an outdated [[list with the available properties that are always saved (PBD) for FLASH1 as>>attach:FLASH1__DaqChannel2HdfNamePbd.xlsx]] HDF5 names and the corresponding DOOCS names
1191 1191  
1192 1192  [[Contents>>doc:||anchor="Contents"]]
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