ASTROSAT CZTI

Data Quality Report

Orbit 57056

Creation date: 2026-04-15T04:41:01.636792
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_083T10_9000006566_57056cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57056cztM0_level2_quad_clean.evt
Size (bytes)435,398,40093,640,320
Size415.2 MB 89.3 MB
Events in quadrant A3,128,735627,194
Events in quadrant B4,131,150636,858
Events in quadrant C3,422,541587,877
Events in quadrant D4,923,856525,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140632
B0169212
C0151402
D0192472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6566500.761499%
B65664306.548888%
C65661311.995126%
D65664687.127627%

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 7546 6567 28 28 0.37% 0.43%
B 7546 6567 281 281 3.72% 4.28%
C 7546 6567 118 118 1.56% 1.80%
D 7546 6567 474 474 6.28% 7.22%

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 278746 1581.14 706 686 175.9
A 13 248 28791 159.81 706 686 175.9
A 8 249 25797 142.79 706 686 175.9
B 10 16 991144 6865.49 675 650 144.3
B 0 63 265064 1832.75 675 650 144.3
B 0 213 58186 398.8 675 650 144.3
C 9 38 494386 2673.29 676 669 184.7
C 1 16 111028 597.55 676 669 184.7
C 14 254 109038 586.78 676 669 184.7
D 15 142 1215987 6480.25 659 629 187.5
D 12 33 326841 1739.35 659 629 187.5
D 2 249 297714 1584.05 659 629 187.5

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