From gmendell@ligo-wa.caltech.edu Wed Apr 16 14:06:30 2008
Date: Wed, 16 Apr 2008 11:06:32 -0700
From: Gregory Mendell 
To: LSC Detector Characterization Community 
Subject: [ligo-dc] List of special channels needed for S5 DQ rerun

Hi All,

A discussion has started about generating a new S5 RDS data set with
channels not already found in the existing RDS frames.

See the emails below. We'd like to invite everyone to send their requests.
Please send channel names, and downsample factors if wanted.

Here are the channels (and downsample factors in the second column) that
already exist in the Level 1 RDS frames:
http://ldas.ligo-wa.caltech.edu/ldas_outgoing/createrds/dsorun/contrib/createrds/S5_L1/adcdecimate_H-RDS_R_L1-S5.txt
http://ldas.ligo-la.caltech.edu/ldas_outgoing/createrds/dsorun/contrib/createrds/S5_L1/adcdecimate_L-RDS_R_L1-S5.txt

I will discuss this at this Friday's DC telecon.  We will finalize the
channel list at the May 16 DC telecon.  (Note that generation of this data
set probably will not start before June, and could take many months to
complete.)

Regards,
Greg


On Tue, 15 Apr 2008, Gregory Mendell wrote:
> Hi Keith,
> 
> At yesterday's LDAS telecon we discussed this.  Basically with the current
> LDAS schedule of disk and tape drive upgrades, a rerun through the S5 raw
> data
> to generate additional RDS data sets could begin by June.  The rerun will
> take
> months, but no one is prepared yet to say exactly how many months. I did
> not
> hear time scales of less than 6 months, but it is going to depend on the
> number of tape drives available, and number of channels requested, whether
> we
> just do science mode times, and some other technical details to be worked
> out.
> As soon as the RDS data starts being generated, the analysis can begin.
> So
> the analysis can complete at the same the RDS data generation completes.
> 
> Thus, we should just start by gettting the channel list put together.
> 
> First off, here are the existing Level 1 RDS channel lists for S5:
> 
> http://ldas.ligo-wa.caltech.edu/ldas_outgoing/createrds/dsorun/contrib/cre
> http:aterds/S5_L1/adcdecimate_H-RDS_R_L1-S5.txt
> http://ldas.ligo-la.caltech.edu/ldas_outgoing/createrds/dsorun/contrib/cre
> http:aterds/S5_L1/adcdecimate_L-RDS_R_L1-S5.txt
> 
> One question we had was whether to include Szabi's timing channels in the
> RDS
> data set, and/or whether to still generate an S5 Timing RDS data set, or
> if
> Szabi has found other ways to do his analysis. (I have added Szabi to this
> email, so he can respond.) These are the channels currently in the Timing
> RDS
> channel list:
> 
> http://ldas-cit.ligo.caltech.edu/ldas_outgoing/createrds/dsorun/contrib/cr
> eaterds/TEST_S5TIMING/sortUniqueTimingS5ChannelsMay2007_withoutMissingChan
> nels.txt
> 
> These total 15 TBs per year of data.
> 
> I'd like to put out a general request for channels for the S5 rerun soon.
> But
> let me see what feedback I get from this email first.
> 
> Below is what I think has been requested so far.  Please check.  I also
> need
> to know if downsampling is wanted or not.
> 
> John,  would like the LSC-AS*_DAQ channels, e.g., these for L1,
> 
> L1:LSC-AS1_I_DAQ
> L1:LSC-AS1_Q_DAQ
> L1:LSC-AS2_I_DAQ
> L1:LSC-AS2_Q_DAQ
> L1:LSC-AS3_I_DAQ
> L1:LSC-AS3_Q_DAQ
> L1:LSC-AS4_I_DAQ
> L1:LSC-AS4_Q_DAQ
> 
> and a similar number for H1 and H2, for a total of 24 channels.  (Every
> fast
> channel requires ~2 TBs, though with compression this can be reduced by as
> much as a factor of 2.)
> 
> John, what about these:
> 
> Xn:LSC-AS1I_CORR_OUT_DAQ
> Xn:LSC-AS2I_CORR_OUT_DAQ
> Xn:LSC-AS3I_CORR_OUT_DAQ
> Xn:LSC-AS4I_CORR_OUT_DAQ
> 
> Robert has requested these:
> 
> H0:PEM-OUT_PWR1
> H0:PEM-LVEA_PWR1
> H0:GDS-TEST_32_1_12
> H0:PEM-RADIO_LVEA_H1
> 
> And Shantanu these:
> 
> L1:TCS-ITMX_PD1AC 2048
> L1:TCS-ITMX_PD2AC 2048
> L1:TCS-ITMY_PD1AC 2048
> L1:TCS-ITMY_PD2_W 2048
> 
> Regards,
> Greg
> 
> PS. We also want to put together the tentative channel lists for S6 as
> soon a
> possible.  Of course this list will change, but the reason to have
> something
> soon as a baseline is that we want to estimate the size of this data set,
> so
> that we can acquire enough disk space to keep this data on disk at the
> sites
> and CIT throughout the S6 run and subsequent analysis.   But lets take
> care of
> the S5 rerun channel list first.
> 
> Keith Riles wrote:
> > Hi Robert,
> > 
> > Great, thanks. I'm ccing Greg on this one too.
> > 
> > Keith
> > 
> > On Mon, 14 Apr 2008, robert schofield wrote:
> > 
> > > Hi,
> > >
> > > Here are the channels I added during the S5 run to give better
> > > coverage of important environmental coupling sites.
> > >
> > > H0:PEM-OUT_PWR1
> > > H0:PEM-LVEA_PWR1
> > > H0:GDS-TEST_32_1_12
> > > H0:PEM-RADIO_LVEA_H1
> > >
> > > Masahiro may want to add some channels for further development of his
> > > upconversion flag.
> > >
> > > Robert
> > >
> > >
> > >
> > > On Mon, Apr 14, 2008 at 1:28 PM, Shantanu Desai
> > > 
> > > wrote:
> > > > Hi
> > > >  Keith
> > > >  In today's glitch call John mentioned that Stuart is planning to
> > > >  make a
> > > >  special S5 RDS list containing channels which were never in Level-1
> > > >  RDS
> > > >  during S5 , but are needed for DQ purposes.
> > > >  My wishlist of channels for such a rerun are :
> > > >
> > > > L1:TCS-ITMX_PD1AC 2048
> > > > L1:TCS-ITMX_PD2AC 2048
> > > > L1:TCS-ITMY_PD1AC 2048
> > > > L1:TCS-ITMY_PD2_W 2048
> > > >  This would facilitate making L1 TCS data quality flags for the
> > > >  entire
> > > >  S5.
> > > >  Robert also wanted the accelerometer channels (which I think are
> > > >  the
> > > >  H0:PEM_*_PWR channels, but he can provide the exact names)
> > > >
> > > >
> > > >  Thanks
> > > >  Shantanu
> > > >
> > 
> 
> On Tue, 1 Apr 2008, John Zweizig wrote:
> > Hi Keith et al,
> >
> > I had a brief talk with Stuart yesterday where we discussed the idea of
> > running through all the S5 raw data to select off a few channels that
> > are
> > not
> > on the L1 RDS for detector characterization. This would enable rapid
> > processing of the these channels for detector characterization purposes.
> > I
> > think that Stuart agreed in principle to give something like this a
> > reasonable
> > number of tape drives and other resources.
> >
> > There are a few channels I had in mind. I would personally like to see
> > the
> > eight Xn:LSC-ASn_[IQ]_DAQ channels, and I would guess that Masahiro
> > needs
> > some
> > coil channels and Warren Johnson would like one or more Beam Splitter
> > Optical
> > Level channels. It is very likely that other members of the detchar
> > community
> > have one or more channels in mind that if they could only get the full
> > data
> > they could do a good or better job of generating a DQ flag. 
> ...
> 
> 


-- 
Gregory Mendell | Ph: 509-372-8300 ext. 189 | Fax: 509-372-8137
LIGO Hanford Observatory, PO Box 159, MS S9-02, Richland WA 99352
http://www.ligo.caltech.edu | http://www.ligo-wa.caltech.edu
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