Data quality flags generated and displayed by the software are a measure of the
overall chip quality, based on well quality thresholds and other data analysis
characteristics.
Note:
For more information on quality assessment in the software, see the user
documentation for the QuantStudio
™
3D AnalysisSuite
™
Software.
In order, from high quality to low quality:
•
(green) – Review of the analysis results is suggested, but not required. This
flag is shown if the data meets all quality thresholds.
•
(yellow) – Review of the analysis results is suggested. This flag is shown if the:
– Instrument cannot clearly identify the population of unamplified wells.
– Distribution of unamplified wells on the chip is not uniform.
– Sample concentration is outside the optimal range (200-2000 copies/µL) for
the system as currently defined by the chip quality metrics.
•
(red) – Review of the analysis results is strongly suggested. If necessary,
reimage the chip or rerun the sample. This flag is shown if the total number of
filled wells is < 5000 or the percentage of low quality wells (those with well
quality < 0.5) is > 25%.
For each chip, the QuantStudio
™
3D Digital PCR Instrument stores the processed
imaging data and the results of the preliminary analysis in a single experiment (.eds)
file.
The instrument names each experiment file uniquely by combining the ID of the chip
and the date/time of the run according to the following formula:
2
3
1
4
1
File prefix
—The optional user-specified text.
2
Date stamp
—The date at which the chip was run, expressed in the "
yymmdd
" format where
yy
is the last two digits of the year,
mm
is the numerical order of the month, and
dd
is the day
of the run.
3
Time stamp
—The time at which the chip was run, expressed in the "
hhmmss
" format where
hh
is the hour (in 24-hour format),
mm
is the minutes, and
ss
is the seconds.
4
Chip ID
—The number on the chip lid and encoded in the 2D barcode that uniquely identifies
the chip.
443MPJ
IMPORTANT!
If the instrument cannot read the ID of a loaded chip, then it uses the
date/time of the run instead to name the file.
Note:
In the example shown above, the file name indicates that the file contains data
for chip
BO498N
which was run at 7:58 pm on May 31, 2013.
Data quality
flags
About data
files
Chapter 5
Image and analyze the chips
Primary analysis
5
48
QuantStudio
™
3D Digital PCR System User Guide
Содержание Applied Biosystems QuantStudio
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