There is a problem w/ your write-up. Check that you have valied entries
for \$CAID and \$Campn in your analysis.php file. If that checks out, then
Contact Stansberry";
return ;
}
// get first matching task
$row = mysql_fetch_array($result);
$title = $row["title"];
$princ = $row["principal"];
$deputy= $row["deputy"];
$campn0 = $row["campn0"];
$aorkeys = $row["aorkeys"];
// get real name of principal, deputies
$princ = ioc_get_person($princ);
$princ = $princ[0];
$deps = explode(",",$deputy);
foreach ($deps as $depty) {
$depty = trim($depty);
$depty = ioc_get_person($depty);
$depty = $depty[0];
$depty = explode(",",$depty);
$depty = $depty[0]; // last names only
$deplist[] = $depty;
}
$deplist = implode(", ", $deplist);
$caid = sprintf("%03d",$caid);
$file = "mips-".$caid.$campn.".analysis.php";
// if more matches, append the AORKEYS from those
$numrows = mysql_num_rows($result);
if ($numrows > 1) {
$aorkeys = " " . $numrows . " Task Executions: ". $aorkeys;
for ($i=0;$i < mysql_num_rows($result); $i++) {
$row = mysql_fetch_array($result);
$morekeys = $row["aorkeys"];
$aorkeys = $aorkeys .'; '.$morekeys;
}
}
// END PHP.
?>
<? echo "MIPS-$caid, Campaign $campn IOC/SV Analysis"; ?>
Principal:
Deputy:
Analyst:
AORKEYS:
Last Updated:
Task Outcome Summary
- DATA STATUS: Nominal
- TASK OUTCOME: Anomalous
Abstract
Both 160 µm stimulators were exercised, and the A stim was also run at 2
lower DAC settings. Signals were seen from both stims, and at all DAC settings. The
response at the nominal DAC setting, 0x40, was about 2 times higher than expected, giving
an array-averaged brightness of about 35000 DN/s instead of 18000 - 20000 DN/s. This may
in fact be an underestimate of the brightness, because many pixels were so saturated that
mips_sloper was unable to fit slopes to them. The test included taking 3 sets of data
on the 70 µ'm array using the Flood A stim, and one set with Flood B. As was seen
in Campaign G (mips-247), the 70 µm stim brightness was 10000 DN/s, about as
intended.
Analysis
The array-average signal (DN/s) was computed for all 128 DCEs collected and plotted vs.
DCE number, and compared with expected signal levels. The signal from four individual pixels
was similarly plotted.
Results
The data were taken in 32-DCE groups. The stim used, DAC setting, and array-average stim
brightness are tabulated below. Results from the 70 µm aray are also given.
| DCEs |
160 µm Stim |
DAC |
<signal> (DN/s) |
|
70 µm Stim |
DAC |
<signal> (DN/s) |
| 1 - 32 | Flood A | 0x40 | ~35000 | | Flood A | 0x33 | ~10500 |
| 33 - 64 | Flood B | 0x3C | ~35000 | | Flood B | 0x33 | ~10500 |
| 65 - 96 | Flood A | 0x33 | ~10000 | | Flood A | 0x33 | ~10500 |
| 97 - 128 | Flood A | 0x30 | ~7000 | | Flood A | 0x33 | ~10500 |
The 160 µm stim signal at 0x33 was ~12000 DN/s in Campaign G (see mips-247), but only
about 10000 DN/s in campaign H. This does not appear to be a problem with the IER, but that
should be double checked.
Figure 1 shows the array averaged signal (DN/s) and the signal from 4 pixels on the 160 µm
array from the entire experiment. The data were analyzed with mips_sloper with the electronic linearity
correction turned off. In addition, CR rejection was set to 8 sigma (from 5), and auto-reject reads
was set to 2, in order to get slopes for more pixels.
Figure 1.Signal (DN/s) on the 160 µm array during the stim aliveness test. The
changes in stim brightness are due to the use of different stims and/or different DAC settings
for the stims, as summarized in the table above. As can be seen in the lower 4 panels, for
individual pixels, mips_sloper was unable to fit the ramps during many of the stim DCEs due to
strong saturattion.
Figure 2 shows the same thing, but for the 70 µm array.
Figure 2.Signal (DN/s) on the 70 µm array during the stim aliveness test.
Conclusions
The 70 and 160 µm stimulators are all operational post-launch. The nominal DAC setting
for the 160 µm Flood A stim, 0x40, is too high for current value of the array bias (see
mips-992 analysis in H - 160um Vresets are close to optimized, but overall bias could be reduced).
The brightness of the
70 µm stims is close to what was predicted before launch, and the nominal setting appears
to be about right (we were aiming for about 8000 DN/s, and got about 10000 DN/s).
Output and Deliverable Products
None.
Actions Following Analysis
Consider changing the 160 µm Flood A DAC setting from 0x40 to 0x33 (or so).
analyzing the mips-248 data in Campaign H. This action has the lein that the array
biases have not been optimized. Once optimization has been performed we may find that
the current stim settings are good.