ASTROSAT CZTI

Data Quality Report

Orbit 36454

Creation date: 2022-07-19T05:33:27.346113
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C07_009T01_9000005200_36454cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36454cztM0_level2_quad_clean.evt
Size (bytes)419,515,20097,888,320
Size400.1 MB 93.4 MB
Events in quadrant A2,755,595654,512
Events in quadrant B3,435,689648,225
Events in quadrant C2,998,149639,010
Events in quadrant D3,121,942618,233

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119863
B0141282
C0122882
D0133912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5789110.190016%
B57891352.332009%
C5789530.915529%
D5789921.589221%

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 8654 5791 0 0 0.00% 0.00%
B 8654 5791 85 85 0.98% 1.47%
C 8654 5791 33 33 0.38% 0.57%
D 8654 5791 70 70 0.81% 1.21%

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 10 83 199299 1519.83 649 635 130.7
A 13 210 10350 74.32 649 635 130.7
A 13 6 10196 73.14 649 635 130.7
B 5 172 411943 3369.34 638 621 122.1
B 5 255 275378 2250.67 638 621 122.1
B 0 190 81489 662.43 638 621 122.1
C 15 214 270407 1830.11 631 635 147.4
C 0 10 166284 1123.75 631 635 147.4
C 15 159 51071 342.15 631 635 147.4
D 2 250 156533 1020.88 630 612 152.7
D 10 199 86687 563.57 630 612 152.7
D 12 233 86348 561.35 630 612 152.7

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