ASTROSAT CZTI

Data Quality Report

Orbit 54341

Creation date: 2025-10-14T12:30:12.108322
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_126T15_9000006516_54341cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54341cztM0_level2_quad_clean.evt
Size (bytes)668,148,48084,355,200
Size637.2 MB 80.4 MB
Events in quadrant A2,947,621640,405
Events in quadrant B3,625,976676,571
Events in quadrant C5,787,823535,022
Events in quadrant D11,873,361255,431

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135395
B0151782
C0217312
D0397196

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408500.780275%
B64101872.917317%
C641088413.790952%
D6409365256.982369%

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 7585 6410 24 24 0.32% 0.37%
B 7585 6411 104 104 1.37% 1.62%
C 7585 6411 865 865 11.40% 13.49%
D 7585 6410 3466 3466 45.70% 54.07%

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 0 8 127914 748.9 685 667 169.9
A 8 246 46656 270.66 685 667 169.9
A 5 243 44152 255.92 685 667 169.9
B 5 185 338985 2370.04 673 651 142.8
B 7 0 235486 1645.02 673 651 142.8
B 0 213 89123 619.75 673 651 142.8
C 15 147 1421940 8259.8 624 620 172.1
C 1 241 767185 4454.79 624 620 172.1
C 13 3 544480 3160.57 624 620 172.1
D 8 176 9208890 81123.69 395 375 113.5
D 15 108 843258 7425.5 395 375 113.5
D 2 252 148248 1302.71 395 375 113.5

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