ASTROSAT CZTI

Data Quality Report

Orbit 20181118_T03_058T01_9000002522_level2

Creation date: 2018-11-19T09:34:53.394702
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_058T01_9000002522cztM0_level2_bc.evt modeM0/AS1T03_058T01_9000002522cztM0_level2_quad_clean.evt
Size (bytes)2,249,432,640830,658,240
Size2.1 GB 792.2 MB
Events in quadrant A11,770,6435,523,990
Events in quadrant B13,904,6885,574,387
Events in quadrant C17,778,1915,381,307
Events in quadrant D21,135,1285,119,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010600
B010600
C010600
D010600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01109950
B01177700
C01367920
D01496110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518939381.807566%
B5189313152.534060%
C5189315793.042800%
D5189342958.276646%

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 60110 51896 27 27 0.04% 0.05%
B 60110 51893 39 39 0.06% 0.08%
C 60110 51894 3 3 0.00% 0.01%
D 60110 51886 313 313 0.52% 0.60%

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 1050236 1731.95 2775 2726 604.8
A 12 189 67531 107.15 2775 2726 604.8
A 12 194 18560 26.18 2775 2726 604.8
B 3 64 642054 1232.29 2806 2749 518.8
B 7 220 632636 1214.13 2806 2749 518.8
B 15 35 331653 633.98 2806 2749 518.8
C 3 233 7269800 11522.39 2695 2691 630.7
C 0 207 121349 188.14 2695 2691 630.7
C 5 112 28474 40.88 2695 2691 630.7
D 1 52 10030056 16229.1 2666 2577 617.9
D 7 38 243699 390.25 2666 2577 617.9
D 2 234 220760 353.12 2666 2577 617.9

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