[data-issues] compression error with G.SCZ

[Matthew Fouch]

Hi Rick,

OK, thanks for noting this.  I've found the true problems with my requests,
which are my fault (big surprise).  Charlie Groves pointed out that I'm
using an old version of java which seems to be near the root of the problem
(at least for linux - my new mac pro doesn't yield this issue).

Thanks in any event!
Matt



On 10/24/06 11:16 AM, "Rick Benson" <rick at iris.washington.edu> wrote:

> Greetings,
>   The problem has been detected in the holdings at the DMC. We will
> fix this problem
> promptly.
> Chad has correctly summarized the cause in his earlier post.
> Operations did not remove the "bad" data before
> archiving the "good" data for a brief time-window during multiple
> resends of Geoscope data during 2004.
> The database was correctly pruned, but the waveforms found their way
> into the DMC's "packed"
> version of the data.
>   We are polling our system logs and defining what data we will be
> removing that is affected (incorrect)
> Steim-1 data format. When this is complete, we will fix the POND
> data, as well.
> Thank you for posting this, and apologies for the bug on the windshield.
> 
> -Rick Benson
>   IRIS DMC
> On Oct 24, 2006, at 7:34 AM, Philip Crotwell wrote:
> 
>> 
>> HI
>> 
>> One of our SOD users (Matt Fouch) found a problem with G.SCZ, it
>> looks like the usual issue of data in the POND being a different,
>> unknown compression from data in the archive (steim1). Appears for
>> an event on 23 Feb 1995, but I am not sure if it effects events
>> before or after this one.
>> 
>> Let us know what you find.
>> 
>> thanks,
>> Philip
>> 
>> 2006-10-24 00:25:04,724 WARN 0 Fail.WaveformVector - ECGroup:
>> Event: Cyprus Regi
>> on | 02/23/1995 21:03:02 GMT | Mag: 5.8 | Depth 15.00 km | (35.039,
>> 32.266) G.19820502T00:00:00.000Z.SCZ.  .BHZ.
>> 19910927T00:00:00.000Z , G.19820502T00:00:00.000
>> Z.SCZ.  .BHN.19910927T00:00:00.000Z , G.
>> 19820502T00:00:00.000Z.SCZ.  .BHE.199109
>> 27T00:00:00.000Z ,  Processor had a system failure
>> edu.iris.dmc.seedcodec.SteimException: encoded data length is not
>> multiple of 64 bytes (4048)
>> 
>> Caused by: edu.iris.dmc.seedcodec.SteimException: encoded data
>> length is not multiple of 64 bytes (4048)
>>         at edu.iris.dmc.seedcodec.Steim1.decode(Steim1.java:53)
>>         at edu.iris.dmc.seedcodec.Codec.decompress(Codec.java:121)
>>         at  
>> edu.iris.Fissures.seismogramDC.LocalSeismogramImpl.decodeBits
>> (LocalSeismogramImpl.java:1395)
>>         at  
>> edu.iris.Fissures.seismogramDC.LocalSeismogramImpl.get_as_longs
>> (LocalSeismogramImpl.java:1053)
>> 
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>