ASTROSAT CZTI

Data Quality Report

Orbit 56941

Creation date: 2026-04-07T11:18:09.572055
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_083T14_9000006564_56941cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56941cztM0_level2_quad_clean.evt
Size (bytes)789,217,92065,623,680
Size752.7 MB 62.6 MB
Events in quadrant A6,693,646500,302
Events in quadrant B6,305,930494,878
Events in quadrant C2,954,638538,016
Events in quadrant D12,812,73550,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239721
B0227151
C0131331
D0419655

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A576487515.180430%
B5764127322.085357%
C57651212.098873%
D5764532392.349063%

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 6884 5764 826 826 12.00% 14.33%
B 6884 5764 970 970 14.09% 16.83%
C 6885 5765 70 70 1.02% 1.21%
D 6883 5763 4354 4354 63.26% 75.55%

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 7 64 4098029 27674.02 592 577 148.1
A 10 251 158813 1068.72 592 577 148.1
A 0 12 103154 692.8 592 577 148.1
B 5 172 2392374 21022.32 535 514 113.8
B 10 16 876507 7699.2 535 514 113.8
B 5 185 595021 5225.19 535 514 113.8
C 13 3 289758 1762.84 602 598 164.0
C 12 249 174273 1058.8 602 598 164.0
C 6 223 49535 298.34 602 598 164.0
D 12 33 10663363 112059.17 329 313 95.2
D 12 1 217697 2284.51 329 313 95.2
D 3 12 149699 1569.91 329 313 95.2

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