From gmendell@ligo-wa.caltech.edu Thu Feb 1 15:11:07 2007 Date: Thu, 01 Feb 2007 12:12:31 -0800 From: Gregory Mendell To: Keith Riles , LDAS_ADMIN_ALL Subject: Latest gaps in raw and RDS data Hi Keith, Below are links to reports and segment lists showing the latest real gaps in the raw and RDS data. These follow on from the last email I sent on this topic on Thu, 04 Jan 2007. There have been no gaps since that date in the LLO data, so there is no report below for LLO. However, two gaps occur in the raw LHO data. The first is from the Tuesday maintenance morning of Jan 23, 2007, during the commissioning break, when computers in the mass storage room at LHO were switched to a new UPS. The second is from yesterday, Jan 31 2007, from the time of a power failure in the LDAS room at LHO, which brought down the fb1 framebuilder's filesystem. For some reason, the fb0 framebuilder also went down shortly after this, causing a loss of data. The two framebuilders are meant to work independently, and fb0 is suppose to stay up if LDAS goes down, but either some coupling is still possible, or it was a coincidence. As always, note that when referring to RDS data: L1 = Level 1 L3 = Level 3 L4 = Level 4 Also note that the gaps in the Level 1 (L1) and Level 4 (L4) RDS data are always 64 s larger than the gaps in the raw and Level 3 (L3) RDS data. This is because L1 and L4 RDS data contains channels that have been downsampled by LDAS, and that process currently requires a 32 s raw frame file to exist before and after the times being reduced, preventing L1 and L3 RDS generation for 32 s either side of a gap in the raw data. Cheers, Greg -------- Original Message -------- Subject: message from ./GapCheckCompareAndReport.tcl emailSegsLHOS5GapCheckCompareAndReport.rsc about reportSegsFrameDataGapsS5LHO.txt Date: Thu, 1 Feb 2007 12:00:36 -0800 (PST) From: LDAS General Account To: ldas_admin_all@ligo.caltech.edu Gaps or warnings were found when running ./GapCheckCompareAndReport.tcl emailSegsLHOS5GapCheckCompareAndReport.rsc. Check: http://www.ldas.ligo-wa.caltech.edu/ldas_outgoing/GapChecker/S5LHO/archive/reportSegsFrameDataGapsS5LHO.txt.Thu_Feb_01_11_59_54_PST_2007. The missing GPS segments are: http://www.ldas.ligo-wa.caltech.edu/ldas_outgoing/GapChecker/S5LHO/archive/MISSING_R.Thu_Feb_01_11_59_54_PST_2007.txt http://www.ldas.ligo-wa.caltech.edu/ldas_outgoing/GapChecker/S5LHO/archive/MISSING_RDS_R_L1.Thu_Feb_01_11_59_54_PST_2007.txt http://www.ldas.ligo-wa.caltech.edu/ldas_outgoing/GapChecker/S5LHO/archive/MISSING_RDS_R_L3.Thu_Feb_01_11_59_54_PST_2007.txt http://www.ldas.ligo-wa.caltech.edu/ldas_outgoing/GapChecker/S5LHO/archive/MISSING_H1_RDS_R_L4.Thu_Feb_01_11_59_54_PST_2007.txt http://www.ldas.ligo-wa.caltech.edu/ldas_outgoing/GapChecker/S5LHO/archive/MISSING_H2_RDS_R_L4.Thu_Feb_01_11_59_54_PST_2007.txt -- 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