ASTROSAT CZTI

Data Quality Report

Orbit 20190814_T03_131T01_9000003090_level2

Creation date: 2019-08-17T11:51:30.785488
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/AS1T03_131T01_9000003090cztM0_level2_bc.evt modeM0/AS1T03_131T01_9000003090cztM0_level2_quad_clean.evt
Size (bytes)3,736,733,7601,302,912,000
Size3.5 GB 1.2 GB
Events in quadrant A22,267,4128,245,258
Events in quadrant B24,817,9838,362,696
Events in quadrant C21,231,1318,178,796
Events in quadrant D37,915,7937,699,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020720
B019700
C020720
D020720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01830
B01830
C01830
D01830

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02134810
B02239520
C02116080
D02678280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10191312961.271673%
B10191319161.880035%
C10191316241.593516%
D10191348094.718731%

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 119973 101916 36 36 0.03% 0.04%
B 119973 101919 16 16 0.01% 0.02%
C 119973 101914 0 0 0.00% 0.00%
D 119973 101912 956 956 0.80% 0.94%

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 5 16 977593 812.11 5523 5424 1197.1
A 2 79 60822 46.28 5523 5424 1197.1
A 13 210 44290 32.47 5523 5424 1197.1
B 7 220 1450723 1371.49 5623 5487 1053.8
B 3 64 476142 446.64 5623 5487 1053.8
B 0 189 353316 330.08 5623 5487 1053.8
C 10 91 197491 151.62 5400 5390 1267.0
C 9 54 113013 84.94 5400 5390 1267.0
C 7 247 107841 80.86 5400 5390 1267.0
D 1 52 9802817 8008.0 5373 5191 1223.5
D 7 238 1522254 1239.96 5373 5191 1223.5
D 9 1 1461216 1190.07 5373 5191 1223.5

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