Difference between revisions of "CDC bad channels"

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−
Data from run 1286, histograms of adc sample values, first 20k events
+
straw K39 disconnected 6 Aug 2015 
 +
straw W38 disconnected 17 Nov 2015
  
−
== Missing bits ==
 
−
{| border="0" cellpadding="2"
 
−
|+ roc 26 slot 3
 
−
|[[Image:cdc_roc26_slot3_ch30.png|thumb|x200px|run 1286 roc 26 slot 3 channel 30 - bit 3]]
 
−
|[[Image:cdc_roc26_slot3_ch50.png|thumb|x200px|run 1286 roc 26 slot 3 channel 50 - bit 5]]
 
−
|[[Image:cdc_roc26_slot3_ch56.png|thumb|x200px|run 1286 roc 26 slot 3 channel 56 - bit 9]]
 
−
|-
 
−
|[[Image:cdc_roc26_slot3_ch57.png|thumb|x200px|run 1286 roc 26 slot 3 channel 57 - bits 0, 3]]
 
−
|[[Image:cdc_roc26_slot3_ch58.png|thumb|x200px|run 1286 roc 26 slot 3 channel 58 - bit 3]]
 
−
|}
 
  
 +
Fall 2016: <br/>
 +
<pre>
 +
Dead channels are
 +
709
 +
2384
 +
3341
  
−
{| border="0" cellpadding="2"
+
Low gain or faulty readout channels are
−
|+ roc 27 slot 16
+
244
−
|[[Image:cdc_roc27_slot16_ch35.png|thumb|x200px|run 1286 roc 27 slot 16 channel 35 - bit 4]]
+
2934
−
|[[Image:cdc_roc27_slot16_ch59.png|thumb|x200px|run 1286 roc 27 slot 16 channel 59 - bit 7]]
+
3094
−
|}
+
3365
 +
3511
  
−
{| border="0" cellpadding="2"
+
Slightly low gain channels are
−
|+ roc 28 slot 15
+
2977
−
|[[Image:cdc_roc28_slot15_ch32.png|thumb|x200px|run 1286 roc 28 slot 15 channel 32 - bit 2]]
+
3178
−
|}
+
</pre>
  
 +
Spring 2017: <br/>
 
<pre>
 
<pre>
−
List of missing bits
+
Dead channels are
 +
(317- revived? looks ok in approved runs)
 +
709
 +
2384
 +
3341
  
−
ROC 26 slot 3 channel 30 missing bit 3
+
Very low gain channels are
 +
244
 +
2934
 +
3094
 +
3365
 +
3511
  
−
ROC 26 slot 3 channel 50 missing bit 5
+
Slightly low gain channels are
 +
2977
 +
3178
  
−
ROC 26 slot 3 channel 56 missing bit 9
+
</pre>
  
−
ROC 26 slot 3 channel 57 missing bit 0
 
−
ROC 26 slot 3 channel 57 missing bit 3
 
  
−
ROC 26 slot 3 channel 58 missing bit 3
+
Winter 2017/Spring 2018: <br/>
 +
<pre>
 +
Dead channels are
 +
709
 +
2384
  
−
ROC 27 slot 16 channel 35 missing bit 4
+
Very low gain channels are
 +
244
  
−
ROC 27 slot 16 channel 59 missing bit 7
 
−
 
−
ROC 28 slot 15 channel 32 missing bit 2
 
 
</pre>
 
</pre>
  
−
== Noise in missing channels? ==
+
Fall 2018 & Spring 2019: <br/>
 +
<pre>
 +
Dead channels are
 +
709
 +
2384
 +
3086
  
−
{| border="0" cellpadding="2"
+
Very low gain channels are
−
|+ roc 25 slot 9
+
244 (given a high threshold)
−
|[[Image:cdc_roc25_slot9_ch14.png|thumb|x200px|run 1286 roc 25 slot 9 channel 14]]
+
 
−
|}
+
</pre>
  
−
{| border="0" cellpadding="2"
 
−
|+ roc 26 slot 4
 
−
|[[Image:cdc_roc26_slot4_ch49.png|thumb|x200px|run 1286 roc 26 slot 4 channel 49 (20k events)]]
 
−
|[[Image:cdc_roc26_slot4_ch49more.png|thumb|x200px|run 1286 roc 26 slot 4 channel 49 (100k events)]]
 
−
|-
 
−
|[[Image:cdc_roc26_slot4_ch62.png|thumb|x200px|run 1286 roc 26 slot 4 channel 62]]
 
−
|[[Image:cdc_roc26_slot4_ch63.png|thumb|x200px|run 1286 roc 26 slot 4 channel 63]]
 
−
|[[Image:cdc_roc26_slot4_ch65.png|thumb|x200px|run 1286 roc 26 slot 4 channel 65]]
 
−
|}
 
  
  
 +
Fall 2019: <br/>
 
<pre>
 
<pre>
−
Many bits missing from same channel (content of filled bins could be noise)  
+
Dead channels are
 +
709  (K39  roc 27 slot 8 ch 13, disconnected)
 +
2354 (W8  roc 25 slot 7 ch 47)
 +
2384  (W38  roc 25 slot 14 ch 25, disconnected)
 +
3086  (Z179  roc 26 slot 6 ch 71)
 +
3089  (Z182  roc 26 slot 6 ch 63)
  
−
ROC 25 slot 9 channel 14 missing bit 0
+
Very low gain channels are
−
ROC 25 slot 9 channel 14 missing bit 1
+
244 (given a high threshold)
−
ROC 25 slot 9 channel 14 missing bit 2
+
−
ROC 25 slot 9 channel 14 missing bit 7
+
−
ROC 25 slot 9 channel 14 missing bit 9
+
−
ROC 25 slot 9 channel 14 missing bit 10
+
  
−
ROC 26 slot 4 channel 49 missing bit 4
+
</pre>
−
ROC 26 slot 4 channel 49 missing bits 7 to 11
+
  
−
ROC 26 slot 4 channel 61 missing bit 3
 
−
ROC 26 slot 4 channel 61 missing bit 4
 
−
ROC 26 slot 4 channel 61 missing bits 7 to 11
 
  
−
ROC 26 slot 4 channel 62 missing bit 3
 
−
ROC 26 slot 4 channel 62 missing bit 4
 
−
ROC 26 slot 4 channel 62 missing bits 7 to 11
 
  
−
ROC 26 slot 4 channel 63 missing bit 4
+
Fall 2021: <br/>
−
ROC 26 slot 4 channel 63 missing bits 7 to 11
+
<pre>
 +
Dead channels are
 +
709  (K39  roc 27 slot 8 ch 13, disconnected)
 +
2354 (W8  roc 25 slot 7 ch 47)
 +
2384  (W38  roc 25 slot 14 ch 25, disconnected)
 +
3089  (Z182  roc 26 slot 6 ch 63)
  
−
ROC 26 slot 4 channel 65 missing bit 3
+
Very low gain channels are
−
ROC 26 slot 4 channel 65 missing bit 4
+
244 (given a high threshold)
−
ROC 26 slot 4 channel 65 missing bits 7 to 11
+
  
 +
from wire-gains w primex data (later on)
 +
 +
straw 244 not enough counts
 +
straw 709 not enough counts
 +
straw 795 not enough counts
 +
straw 2354 not enough counts
 +
straw 2384 not enough counts
 +
straw 3086 not enough counts
 +
straw 3089 not enough counts
  
 
</pre>
 
</pre>
  
−
== High end bits not populated ==
 
  
 +
Spring 2023: <br/>
 
<pre>
 
<pre>
−
High end bits missing (not necessarily a problem, signals could have been small, could be strawless channels)
+
Dead channels are
 +
709  (K39  roc 27 slot 8 ch 13, disconnected)
 +
2354 (W8  roc 25 slot 7 ch 47)
 +
3349 (BB36  roc 25 slot 14 channel 48)
 +
2384  (W38  roc 25 slot 14 ch 25, disconnected)
  
−
ROC 25 slot 8 channel 35 missing bits 9 to 11
 
−
ROC 25 slot 8 channel 37 missing bits 9 to 11
 
−
ROC 25 slot 9 channel 37 missing bits 8 to 11
 
−
ROC 25 slot 9 channel 59 missing bits 8 to 11
 
−
ROC 25 slot 10 channel 61 missing bits 8 to 11
 
−
ROC 25 slot 13 channel 13 missing bits 8 to 11
 
−
ROC 25 slot 13 channel 37 missing bits 8 to 11
 
−
ROC 25 slot 14 channel 35 missing bits 8 to 11
 
−
ROC 25 slot 14 channel 59 missing bits 8 to 11
 
−
ROC 25 slot 16 channel 11 missing bits 8 to 11
 
−
ROC 25 slot 16 channel 37 missing bits 8 to 11
 
−
ROC 25 slot 17 channel 59 missing bits 8 to 11
 
  
−
ROC 26 slot 4 channel 7 missing bits 8 to 11
+
Cold channels:
−
ROC 26 slot 4 channel 11 missing bits 8 to 11
+
3089  (Z182  roc 26 slot 6 ch 63)
−
ROC 26 slot 4 channel 48 missing bits 7 to 11
+
</pre>
−
ROC 26 slot 4 channel 60 missing bits 7 to 11
+
  
−
ROC 26 slot 5 channel 13 missing bits 9 to 11
 
−
ROC 26 slot 6 channel 11 missing bits 8 to 11
 
−
ROC 26 slot 6 channel 61 missing bits 8 to 11
 
−
ROC 26 slot 7 channel 13 missing bits 8 to 11
 
−
ROC 26 slot 9 channel 33 missing bits 8 to 11
 
−
ROC 26 slot 9 channel 35 missing bits 8 to 11
 
−
ROC 26 slot 13 channel 37 missing bits 8 to 11
 
−
ROC 26 slot 13 channel 61 missing bits 8 to 11
 
−
ROC 26 slot 14 channel 61 missing bits 8 to 11
 
−
ROC 26 slot 15 channel 61 missing bits 8 to 11
 
−
ROC 26 slot 16 channel 35 missing bits 8 to 11
 
  
−
ROC 27 slot 3 channel 37 missing bits 8 to 11
+
Histograms from Run 11663, raw sample data from 11637.  <br/>
−
ROC 27 slot 3 channel 61 missing bits 8 to 11
+
Amplitude histograms are amplitude from CDCPulse object without pedestal subtraction.  Note that the amplitude is scaled by 1/8 on the fadc, but the raw signals are not.
−
ROC 27 slot 4 channel 11 missing bits 8 to 11
+
−
ROC 27 slot 4 channel 35 missing bits 8 to 11
+
−
ROC 27 slot 5 channel 13 missing bits 8 to 11
+
−
ROC 27 slot 5 channel 35 missing bits 8 to 11
+
−
ROC 27 slot 7 channel 17 missing bits 8 to 11
+
−
ROC 27 slot 7 channel 41 missing bits 8 to 11
+
−
ROC 27 slot 8 channel 61 missing bits 8 to 11
+
−
ROC 27 slot 9 channel 11 missing bits 8 to 11
+
−
ROC 27 slot 9 channel 35 missing bits 8 to 11
+
−
ROC 27 slot 9 channel 37 missing bits 8 to 11
+
−
ROC 27 slot 10 channel 37 missing bits 8 to 11
+
−
ROC 27 slot 13 channel 35 missing bits 8 to 11
+
−
ROC 27 slot 15 channel 59 missing bits 8 to 11
+
−
ROC 27 slot 16 channel 11 missing bits 8 to 11
+
  
−
ROC 28 slot 5 channel 37 missing bits 8 to 11
+
<pre>
−
ROC 28 slot 6 channel 65 missing bits 8 to 11
+
No hits in straw n=3      A3    rocid==25&&slot==3&&channel==5
−
ROC 28 slot 7 channel 13 missing bits 8 to 11
+
Few hits in straw n=709  K39  rocid==27&&slot==8&&channel==13 disconnected
−
ROC 28 slot 9 channel 35 missing bits 8 to 11
+
Few hits in straw n=2384  W38  rocid==25&&slot==14&&channel==25 disconnected
−
ROC 28 slot 10 channel 37 missing bits 8 to 11
+
No hits in straw n=2873  Y73  rocid==26&&slot==15&&channel==24
−
ROC 28 slot 14 channel 31 missing bits 8 to 11
+
No hits in straw n=2964  Z57  rocid==27&&slot==16&&channel==49
−
ROC 28 slot 14 channel 37 missing bits 8 to 11
+
No hits in straw n=3150  AA46  rocid==25&&slot==17&&channel==68
−
ROC 28 slot 16 channel 47 missing bits 8 to 11
+
No hits in straw n=3151  AA47  rocid==25&&slot==17&&channel==65
−
ROC 28 slot 16 channel 59 missing bits 8 to 11
+
No hits in straw n=3372  BB59  rocid==27&&slot==16&&channel==50
−
</pre>
+
  
−
== Absent channels ==
+
low gain straws
 +
Low gain in straw n= 244  E52  4.000  !  rocid==26&&slot==13&&channel==35
 +
Low gain in straw n= 2977  Z70  1.375  !  rocid==27&&slot==9&&channel==57
 +
Low gain in straw n= 3178  AA74  1.373  !  rocid==27&&slot==9&&channel==56
  
−
<pre>
+
Low-gain HVB group  rocid==26&&slot==15 chan 48+
−
Channels missing altogether (might or might not be intentional)
+
n= 3064-3070, 3270-3277, 3479-3486
 +
</pre>
  
−
Missing channel ROC 25 slot 6 channel 17
 
  
−
Missing channel ROC 25 slot 7 channel 11
+
<h2>Straw 244 (low gain)</h2>
 +
{| border="0" cellpadding="2"
 +
|-
 +
|[[Image:cdc_run11663_n244.png|thumb|x200px|Straw 244]]
 +
|[[Image:cdc_run11637_adcn244.png|thumb|x200px|ADC samples from straw 244]]
 +
|-
 +
|[[Image:cdc_run11663_nextchto244.png|thumb|x200px|Straw in next electronic channel to 244]]
 +
|-
 +
|[[Image:cdc_run11663_n243.png|thumb|x200px|Straw 243]]
 +
|}
  
−
Missing channel ROC 26 slot 3 channel 59
 
  
−
Missing channel ROC 26 slot 4 channel 50
+
<h2>Straw 2977 (low gain)</h2>
−
Missing channel ROC 26 slot 4 channel 51
+
{| border="0" cellpadding="2"
−
Missing channel ROC 26 slot 4 channel 52
+
|-
−
Missing channel ROC 26 slot 4 channel 53
+
|[[Image:cdc_run11663_n2977.png|thumb|x200px|Straw 2977]]
−
Missing channel ROC 26 slot 4 channel 54
+
|[[Image:cdc_run11637_adcn2977.png|thumb|x200px|ADC samples from straw 2977]]
−
Missing channel ROC 26 slot 4 channel 55
+
|-
−
Missing channel ROC 26 slot 4 channel 56
+
|[[Image:cdc_run11663_nextchto2977.png|thumb|x200px|Straw in next electronic channel to 2977 (this is 3178)]]
−
Missing channel ROC 26 slot 4 channel 57
+
|-
−
Missing channel ROC 26 slot 4 channel 58
+
|[[Image:cdc_run11663_n2976.png|thumb|x200px|Straw 2976]]
−
Missing channel ROC 26 slot 4 channel 59
+
|}
−
Missing channel ROC 26 slot 4 channel 64
+
−
Missing channel ROC 26 slot 4 channel 66
+
−
Missing channel ROC 26 slot 4 channel 67
+
−
Missing channel ROC 26 slot 4 channel 68
+
−
Missing channel ROC 26 slot 4 channel 69
+
−
Missing channel ROC 26 slot 4 channel 70
+
−
Missing channel ROC 26 slot 4 channel 71
+
  
−
Missing channel ROC 26 slot 16 channel 13
 
  
−
Missing channel ROC 27 slot 15 channel 20
 
−
Missing channel ROC 27 slot 15 channel 21
 
−
Missing channel ROC 27 slot 15 channel 22
 
−
Missing channel ROC 27 slot 15 channel 23
 
−
Missing channel ROC 27 slot 15 channel 49
 
  
−
Missing channel ROC 27 slot 16 channel 62
+
<h2>Straw 3064 (low gain)</h2>
 +
{| border="0" cellpadding="2"
 +
|-
 +
|[[Image:cdc_run11663_n3064.png|thumb|x200px|Straw 3064]]
 +
|[[Image:cdc_run11637_adcn3064.png|thumb|x200px|ADC samples from straw 3064]]
 +
|-
 +
|[[Image:cdc_run11663_nextchto3064.png|thumb|x200px|Straw in next electronic channel to 3064]]
 +
|-
 +
|[[Image:cdc_run11663_n3063.png|thumb|x200px|Straw 3063]]
 +
|}
  
−
Missing channel ROC 28 slot 17 channel 21
 
−
Missing channel ROC 28 slot 17 channel 29
 
  
−
</pre>
+
<h2>Straw 3178 (low gain)</h2>
 +
{| border="0" cellpadding="2"
 +
|-
 +
|[[Image:cdc_run11663_n3178.png|thumb|x200px|Straw 3178]]
 +
|[[Image:cdc_run11637_adcn3178.png|thumb|x200px|ADC samples from straw 3178]]
 +
|-
 +
|[[Image:cdc_run11663_nextchto3178.png|thumb|x200px|Straw in next electronic channel to 3178]]
 +
|-
 +
|[[Image:cdc_run11663_n3177.png|thumb|x200px|Straw 3177]]
 +
|}

Latest revision as of 10:23, 11 January 2023

straw K39 disconnected 6 Aug 2015  straw W38 disconnected 17 Nov 2015


Fall 2016: 

Dead channels are 
709
2384
3341

Low gain or faulty readout channels are
244
2934
3094
3365
3511

Slightly low gain channels are
2977
3178

Spring 2017: 

Dead channels are 
(317- revived? looks ok in approved runs)
709
2384
3341

Very low gain channels are
244
2934
3094
3365
3511

Slightly low gain channels are
2977
3178


Winter 2017/Spring 2018: 

Dead channels are 
709
2384

Very low gain channels are
244

Fall 2018 & Spring 2019: 

Dead channels are 
709
2384
3086

Very low gain channels are
244 (given a high threshold)


Fall 2019: 

Dead channels are 
709  (K39   roc 27 slot 8 ch 13, disconnected)
2354 (W8  roc 25 slot 7 ch 47)
2384  (W38   roc 25 slot 14 ch 25, disconnected)
3086  (Z179  roc 26 slot 6 ch 71)
3089  (Z182  roc 26 slot 6 ch 63)

Very low gain channels are
244 (given a high threshold)


Fall 2021: 

Dead channels are 
709  (K39   roc 27 slot 8 ch 13, disconnected)
2354 (W8  roc 25 slot 7 ch 47)
2384  (W38   roc 25 slot 14 ch 25, disconnected)
3089  (Z182  roc 26 slot 6 ch 63)

Very low gain channels are
244 (given a high threshold)

from wire-gains w primex data (later on)

straw 244 not enough counts 
straw 709 not enough counts 
straw 795 not enough counts
straw 2354 not enough counts 
straw 2384 not enough counts 
straw 3086 not enough counts 
straw 3089 not enough counts


Spring 2023: 

Dead channels are 
709  (K39   roc 27 slot 8 ch 13, disconnected)
2354 (W8  roc 25 slot 7 ch 47)
3349 (BB36  roc 25 slot 14 channel 48)
2384  (W38   roc 25 slot 14 ch 25, disconnected)


Cold channels:
3089  (Z182  roc 26 slot 6 ch 63)


Histograms from Run 11663, raw sample data from 11637.
Amplitude histograms are amplitude from CDCPulse object without pedestal subtraction. Note that the amplitude is scaled by 1/8 on the fadc, but the raw signals are not. 

No hits in straw n=3      A3    rocid==25&&slot==3&&channel==5
Few hits in straw n=709   K39   rocid==27&&slot==8&&channel==13  disconnected 
Few hits in straw n=2384  W38   rocid==25&&slot==14&&channel==25 disconnected
No hits in straw n=2873   Y73   rocid==26&&slot==15&&channel==24
No hits in straw n=2964   Z57   rocid==27&&slot==16&&channel==49
No hits in straw n=3150   AA46  rocid==25&&slot==17&&channel==68
No hits in straw n=3151   AA47  rocid==25&&slot==17&&channel==65
No hits in straw n=3372   BB59  rocid==27&&slot==16&&channel==50

low gain straws
Low gain in straw n= 244   E52   4.000  !  rocid==26&&slot==13&&channel==35
Low gain in straw n= 2977  Z70   1.375  !  rocid==27&&slot==9&&channel==57 
Low gain in straw n= 3178  AA74  1.373  !  rocid==27&&slot==9&&channel==56 

Low-gain HVB group  rocid==26&&slot==15 chan 48+ 
n= 3064-3070, 3270-3277, 3479-3486


Straw 244 (low gain)

Straw 244
ADC samples from straw 244
Straw in next electronic channel to 244
Straw 243


Straw 2977 (low gain)

Straw 2977
ADC samples from straw 2977
Straw in next electronic channel to 2977 (this is 3178)
Straw 2976


Straw 3064 (low gain)

Straw 3064
ADC samples from straw 3064
Straw in next electronic channel to 3064
Straw 3063


Straw 3178 (low gain)

Straw 3178
ADC samples from straw 3178
Straw in next electronic channel to 3178
Straw 3177
Retrieved from "https://halldweb.jlab.org/wiki/index.php?title=CDC_bad_channels&oldid=118313"