ASTROSAT CZTI

Data Quality Report

Orbit 57130

Creation date: 2026-04-20T05:56:10.142783
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_57130cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57130cztM0_level2_quad_clean.evt
Size (bytes)764,815,68079,850,880
Size729.4 MB 76.2 MB
Events in quadrant A2,880,454632,265
Events in quadrant B8,440,733516,563
Events in quadrant C9,558,226289,916
Events in quadrant D6,935,694532,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131781
B0294551
C0327942
D0249691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6399210.328176%
B6400206832.312500%
C6399344653.852164%
D63994416.891702%

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 7534 6399 9 9 0.12% 0.14%
B 7535 6400 1718 1718 22.80% 26.84%
C 7534 6399 3004 3004 39.87% 46.94%
D 7534 6400 594 594 7.88% 9.28%

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 94566 546.55 695 676 171.8
A 10 251 54331 312.34 695 676 171.8
A 5 113 23982 135.67 695 676 171.8
B 5 172 5203479 37569.55 642 619 138.5
B 10 16 434602 3133.77 642 619 138.5
B 0 213 97684 700.9 642 619 138.5
C 15 198 7361587 64715.31 411 407 113.7
C 12 252 303623 2665.7 411 407 113.7
C 6 223 134470 1178.61 411 407 113.7
D 15 142 3808674 20680.01 649 619 184.1
D 2 249 170145 920.63 649 619 184.1
D 12 33 86636 467.12 649 619 184.1

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