ASTROSAT CZTI

Data Quality Report

Orbit 56751

Creation date: 2026-03-25T16:39:37.153014
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_083T05_9000006560_56751cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56751cztM0_level2_quad_clean.evt
Size (bytes)486,506,88095,659,200
Size464.0 MB 91.2 MB
Events in quadrant A4,786,661604,775
Events in quadrant B4,349,198674,048
Events in quadrant C4,156,688590,138
Events in quadrant D4,197,536561,889

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186741
B0174671
C0170441
D0169841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66774656.964205%
B66783014.507338%
C66783915.855046%
D66773074.597873%

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 7592 6678 294 294 3.87% 4.40%
B 7593 6679 136 136 1.79% 2.04%
C 7593 6679 210 210 2.77% 3.14%
D 7592 6678 219 219 2.88% 3.28%

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 867822 4978.15 707 689 174.2
A 3 62 858038 4921.98 707 689 174.2
A 10 251 265624 1520.97 707 689 174.2
B 4 206 992057 6507.71 709 681 152.3
B 5 185 164158 1073.11 709 681 152.3
B 8 128 158543 1036.25 709 681 152.3
C 15 230 827540 4261.09 699 693 194.0
C 9 38 181287 930.68 699 693 194.0
C 13 3 83447 426.47 699 693 194.0
D 5 113 467202 2361.41 703 672 197.6
D 11 246 296846 1499.13 703 672 197.6
D 7 238 165487 834.24 703 672 197.6

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