ASTROSAT CZTI

Data Quality Report

Orbit 20180921_T02_092T01_9000002384_level2

Creation date: 2018-09-24T11:54:21.792960
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T02_092T01_9000002384cztM0_level2_bc.evt modeM0/AS1T02_092T01_9000002384cztM0_level2_quad_clean.evt
Size (bytes)3,194,438,4001,069,335,360
Size3.0 GB 1019.8 MB
Events in quadrant A20,356,9106,980,261
Events in quadrant B21,871,9736,919,173
Events in quadrant C18,290,3246,588,037
Events in quadrant D30,716,9216,356,747

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016460
B016460
C016460
D016460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01821990
B01856340
C01737990
D02160390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8087918692.310859%
B8087915441.909025%
C8087911511.423114%
D8087947795.908827%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 92789 80882 47 47 0.05% 0.06%
B 92789 80883 78 78 0.08% 0.10%
C 92789 80882 3 3 0.00% 0.00%
D 92789 80882 995 995 1.07% 1.23%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 2832616 3077.98 4242 4174 918.9
A 0 253 429697 463.07 4242 4174 918.9
A 9 143 314293 337.48 4242 4174 918.9
B 5 65 1976098 2458.01 4238 4135 802.3
B 0 189 1045912 1298.56 4238 4135 802.3
B 7 220 444268 548.62 4238 4135 802.3
C 3 233 2284536 2427.97 4023 4005 939.3
C 3 9 236463 247.49 4023 4005 939.3
C 0 207 229957 240.56 4023 4005 939.3
D 1 52 12643679 13349.27 4085 3947 946.8
D 7 38 1107410 1165.41 4085 3947 946.8
D 2 234 331306 345.74 4085 3947 946.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter