Jetmet/CAT

1
the JETMET Run Selection

• Missing ET definitions / Criteria
• Results for p13.06 Post-shutdown data
• Runs from 172400 to 177830 (June 8th)
• ? 64 pb-1 reconstructed
• Compare with pre-shutdown data
• ? Total lumi 115 pb-1
• Prospects

2
Criteria to select good runs?
Criteria must be Physics
independent Lumi independent Robust
Inclusive Criteria (MET oriented) Average
missing ET (x and y component) ? must be
centered to 0 Rms of missing ET is dependent on
process/lumi but is slowly varying Scalar ET is
not constrained ? must be used only with
caution Exclusive Criteria (JET oriented) Phi
distribution of the Jets must be flat Jet
multiplicity is physics dependent stable for a
given trigger mix ? only the phi uniformity
(but its already a lot!) can be safely
tested w/o making physics assumptions
3
MET-x and y, lt gt and RMS
Pre-shutdown one entry/run RMS-MET-x
ltMET-xgt RMS-MET-y ltMET-ygt
4
Good Run Definition
Only Runs/Files with gt 1000 events are
considered, in order to have enough statistical
precision on the average/rms measurements.
Define the average shift MET-xy sqrt
(ltMET-xgt)2 (ltMET-ygt)2 and similar def. for
RMS-xy sqrt ( RMS-x )2 ( RMS-y )2 To
declare a RUN GOOD 1) Require
MET-xy lt 6 GeV in all files of a run,
and MET-xy lt 4 GeV in
average 2) Require RMS-xy lt 18 GeV
in all files of a run
and RMS-xy lt 16 GeV in average 3) Require
scalar ET gt 70 GeV in all files of a
run
and scalar ET gt 80 GeV
5
Variables for Run Selection
Pre-shutdown one entry/good run
lt 16 GeV
lt 4 GeV
gt 80 GeV
Not used
6
XY shift, rms, setb, metb (Now)
Post-shutdown one entry/good run
lt 16 GeV
lt 4 GeV
gt 80 GeV
Not used
7
Post-shutdown. Before Run Sel.
GeV
?
MET-xy
File
GeV
RMS-xy
File
GeV
SET
File
8
Runs 176568-70
From the logbook CAP Marco Verzocchi Inherited
store 2507 from the previous shiftcrew. . At
around 400 (roughly 3/4 of run 176568) two BLS
started misbehaving, giving 4 contiguous hot
cells at (eta,phi)
(-31/-32,56/57). This was first noticed by the
remote GM shifter, and then it took almost 2
hours to fix it (with help from Nirmalya). The
runs affected by this problem are 176568 (last
quarter), 176569 and 176570. After the problem
was fixed went back to normal smooth running.
There is no explanation for the fact that the two
BLS boards started misbehaving almost
simultaneously.
9
Runsel variables for those Runs
shift rms ltsetgt 176568 1
3.15 11.47 117.53 176568
2 3.31 10.99 113.66 176568
3 2.96 12.58 118.68
176568 4 2.72 12.75 115.76
176568 5 3.83 11.59
117.83 176568 6 3.05
11.61 117.52 176568 7
2.99 13.06 115.68 176568 8
2.91 10.63 113.46 176568
9 2.75 10.47 114.61 176568
10 2.05 11.54 112.53
176568 11 41.11 55.46 179.05
176568 12 44.71 57.15
180.01 176568 13 43.33
57.95 172.29 176568 14
41.07 57.75 172.22 176568 15
42.59 56.02 173.52 176568 ??????
15 gt 16.17 26.74 135.62
shift rms
ltsetgt 176569 1 42.13 55.47
168.02 176569 2 42.66
56.84 174.32 176569 ?????? 2 gt
42.39 56.16 171.17 176570
1 38.97 55.47 166.81 176570
2 39.88 58.65 178.41 176570
3 39.85 54.66 172.29
176570 ?????? 3 gt 39.57 56.26
172.50 176571 1
3.69 10.28 106.15 176571 2
3.43 10.78 109.06 176571
3 3.09 10.87 108.01 176571
4 3.44 10.58 105.41
10
Post-shutdown. After Run Sel.
GeV
MET-xy
File
GeV
RMS-xy
File
GeV
SET
File
11
Post-shutdown. After Run Sel.
GeV
MET-xy
Run
GeV
RMS-xy
Run
GeV
SET
Run
12
Post-shutdown Run Selection(3.1)
From Run 172400 to 177830 (? 8th of June)
we keep 4189 Files. We reject 183
files? 0.958 we keep 404 Runs. We
reject 59 runs? 0.873 we keep 127 M
Events. We reject 121 M evts? 0.913 Recorded
Lumi we keep 57198. pb-1. We reject
5643. pb-1? 0.910 Delivered Lumi we keep
63487. pb-1 We reject 6495. pb-1? 0.907
of Runs not treated so far 26.
?Corresponding to 1658. pb-1, fraction
0.026
13
METB and SETB (mean, RMS)
Pre-shutdown one entry/good run METB -
rms METB - mean SETB mean SETB - rms
14
METB and SETB (Now)
Post-shutdown one entry/good run METB -
rms METB - mean SETB mean SETB - rms
15
METB x and y
Post-shutdown one entry/file in good run
16
METB, x and y, mean and RMS
Post-shutdown one entry/run RMS-MET-x
ltMET-xgt RMS-MET-y ltMET-ygt
17
overview of post-shutdown
May
April
March
June
MET-xy
RMS-xy
SET
18
Summary
New run selection performed on post-shutdown
data On the post-shutdown data, we see a
degradation of the calo quantities. Higher
fraction of events at high MET, warm zones We
have about 64 pb-1 recoed / 57 pb-1 good runs in
average are available after shutdown, i.e.
91 of the data This fraction is being increased
by making the run selection file by file, or lumi
block based but we must correct the
caldata chunk .