ASTROSAT CZTI

Data Quality Report

Orbit 57265

Creation date: 2026-04-29T06:51:11.623845
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_049T03_9000006570_57265cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57265cztM0_level2_quad_clean.evt
Size (bytes)440,020,80081,080,640
Size419.6 MB 77.3 MB
Events in quadrant A2,984,555534,983
Events in quadrant B3,051,626578,912
Events in quadrant C6,686,266421,873
Events in quadrant D3,061,718466,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132951
B0138951
C0244181
D0139942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479200.308690%
B6480691.064815%
C648095014.660494%
D6479610.941503%

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 7629 6765 2 2 0.03% 0.03%
B 7630 6766 28 28 0.37% 0.41%
C 7630 6738 885 885 11.60% 13.13%
D 7629 6765 50 50 0.66% 0.74%

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 8 4 312894 1847.65 682 664 169.0
A 3 14 18699 106.72 682 664 169.0
A 3 137 8282 45.08 682 664 169.0
B 8 234 97296 680.38 673 648 142.1
B 7 252 89764 627.35 673 648 142.1
B 5 185 54604 379.84 673 648 142.1
C 15 224 3744067 22057.62 618 611 169.7
C 6 13 258707 1520.78 618 611 169.7
C 14 246 97494 570.87 618 611 169.7
D 8 240 125745 681.56 652 622 183.6
D 5 32 100602 544.6 652 622 183.6
D 2 249 70835 382.46 652 622 183.6

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