anyextract GAP analysis: apparent false alarm
GAP report produced by anyextract:
SPECIAL MODE: find gaps in input data - do not extract data
step 1: collect matching index entries
data selection:
first sample: 060 01.03.2015 12:00:00.000000
last sample: 062 03.03.2015 00:00:00.000000
duplicate input samples are a break condition
station: .*
channel: .*
instrument: .*
auxid: .*
** open next index file: /data/BFO_index/index/data/BFO/seedlink/2015/XS/BFO/LHE.D/XS.BFO.00.LHE.D.2015.061.idx
** open next index file: /data/BFO_index/index/data/BFO/seedlink/2015/XS/BFO/LHE.D/XS.BFO.00.LHE.D.2015.062.idx
** open next index file: /data/BFO_index/index/data/BFO/seedlink/2015/XS/BFO/LHE.D/XS.BFO.00.LHE.D.2015.063.idx
** open next index file: /data/BFO_index/index/data/BFO/seedlink/2015/XS/BFO/LHE.D/XS.BFO.00.LHE.D.2015.060.idx
step 2: sort collected index entries
step 3: define copy operations
! GAP (BFO ,LHE,XS:0): 061 02.03.2015 00:01:48.069538 (expected) < 061 02.03.2015 00:01:48.069539 (actual)
step 4: report contiguous data
chunks of contiguous data:
BFO LHE XS:0 01.03.2015 12:00:00.069538 - 02.03.2015 00:01:47.069538
BFO LHE XS:0 02.03.2015 00:01:48.069539 - 03.03.2015 00:00:00.069539
analysis period: 01.03.2015 12:00:00.000000 - 03.03.2015 00:00:00.000000
gaps present in input data:
stream: LHE:BFO:XS:0 dt=000d 00h 00m 01.000000s
061 02.03.2015 00:01:48.069538: break in contiguous data
: 0 samples are missing
number of breaks / number of gaps / number of missing samples / completeness:
1 / 0 / 0 / 99.99%
summary of entire analysis:
number of breaks / number of gaps / number of missing samples / completeness:
1 / 0 / 0 / 99.99%
Break condition is triggered by a mismatch of one microsecond at the beginning of a new data file. This happen although a timing tolerance of three microseconds is set:
content of /data/BFO_index/index/data/BFO/seedlink/2015/XS/BFO/LHE.D/XS.BFO.00.LHE.D.2015.061.idx
/data/BFO/seedlink/2015/XS/BFO/LHE.D/XS.BFO.00.LHE.D.2015.061 1 mseed:ttolerance=3
WIDX 2015/03/02-00:01:48.069539 BFO LHE XS:0 NSP 86464 r 1.0e+00 -1.0e+00 -1.0e+00 -1.0e+00 -1.0e+00