ASTROSAT CZTI

Data Quality Report

Orbit 56825

Creation date: 2026-03-30T16:22:13.660816
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/AS1A14_083T03_9000006562_56825cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56825cztM0_level2_quad_clean.evt
Size (bytes)524,214,72093,173,760
Size499.9 MB 88.9 MB
Events in quadrant A6,172,520621,102
Events in quadrant B3,402,494671,552
Events in quadrant C3,907,391593,099
Events in quadrant D5,432,245494,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228811
B0144341
C0158871
D0204331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63181872.959797%
B63181762.785692%
C63182063.260525%
D631992714.670043%

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 7388 6319 52 52 0.70% 0.82%
B 7388 6319 42 42 0.57% 0.66%
C 7388 6319 118 118 1.60% 1.87%
D 7389 6320 844 844 11.42% 13.35%

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 3 14 3174614 18476.07 698 680 171.8
A 7 64 155640 902.05 698 680 171.8
A 10 251 134049 776.37 698 680 171.8
B 10 16 116845 787.75 687 662 147.5
B 0 152 94145 633.84 687 662 147.5
B 5 248 80323 540.12 687 662 147.5
C 15 230 637937 3473.71 678 671 183.5
C 6 13 215794 1172.63 678 671 183.5
C 1 16 188114 1021.74 678 671 183.5
D 15 142 1780314 9654.03 654 624 184.3
D 2 249 762177 4131.09 654 624 184.3
D 2 31 95751 516.02 654 624 184.3

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