Changes between Version 4 and Version 5 of DetectionsToMeasurements

Timestamp:

Sep 16, 2015, 3:30:28 PM (11 years ago)

Author:

bills

Comment:

--

DetectionsToMeasurements

@@ -84 +84 @@
 
 The next step is to trace the detections in PSPS back to the DVO catalog.
- 
+
+== Finding particular detections in the DVO catalog files ==
+Let me say up front that there are undoubtedly ways to use DVO commands to accomplish this, but I found it quicker and more flexible
+to use STILTS.
+
+The file o5745g0427o.356801.missing.fit contains a list of the psphot detections that were not matched to the PSPS detections. Perusing these detections
+I choose one not near the edge of the frame: IMAGE_ID 35680124 (from OTA XY24), DET_ID 140.
+
+The program detectToMeasure may be used to look for the missing detections in the DVO catalog files. 
+
+If we just want to find which catalog and dvo "image" contains this detection we can use
+{
+(ipp079:~/work/psps) bills% detectToMeasure --ra 333.719989076316 --dec -4.47253338047446 --exp_id 356801 --class_id XY24
+RA            DEC      NAME     CAT_ID EXTERN_ID IMAGE_ID catalogPrefix
+333.719989076316 -4.47253338047446 s0000/5228.01 NULL 75160686 4638 /data/ipp079.0/gpc1/catdirs/SAS/SAS39.V1/s0000/5228.01
+}
+To find the missing detection add --det_id 140
+{
+detectToMeasure --ra 333.719989076316 --dec -4.47253338047446 --exp_id 356801 --class_id XY24 --det_id 140 --output det140.fit
+
+Sure enough it's in there.
+% ftlist det140.fit h
+
+        Name               Type       Dimensions
+        ----               ----       ----------
+HDU 1   Primary Array      Image      Int1(3659)                    
+HDU 2   DVO_MEASURE_PS1_V5 BinTable    63 cols x 1 rows
+} 
+
+If the --list-others option is used it will extract all detections for the dvo object for the detection in question. if --list-others --this-image is used it
+finds detections from this image which are associated with the same object.
+
+
+{{{
+% detectToMeasure --ra 333.719989076316 --dec -4.47253338047446 --exp_id 356801 --class_id XY24 --det_id 140 --output thisobject.fit --this-image --list-others
+RA            DEC      NAME     CAT_ID EXTERN_ID IMAGE_ID catalogPrefix
+333.719989076316 -4.47253338047446 s0000/5228.01 NULL 75160686 4638 /data/ipp079.0/gpc1/catdirs/SAS/SAS39.V1/s0000/5228.01
+
+% ftlist thisobject.fit h
+
+        Name               Type       Dimensions
+        ----               ----       ----------
+HDU 1   Primary Array      Image      Int1(3659)                    
+HDU 2   DVO_MEASURE_PS1_V5 BinTable    63 cols x 2 rows  
+}}}
+
+Looks like ippToPsps doesn't handle objects with multiple detections in the same image correctly.