ASTROSAT CZTI

Data Quality Report

Orbit 56668

Creation date: 2026-03-20T02:46:26.714849
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_083T06_9000006558_56668cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56668cztM0_level2_quad_clean.evt
Size (bytes)512,887,68087,073,920
Size489.1 MB 83.0 MB
Events in quadrant A2,993,958611,280
Events in quadrant B2,959,495667,232
Events in quadrant C9,011,239385,481
Events in quadrant D3,530,807532,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135342
B0133381
C0311131
D0150761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296701.111817%
B6296390.619441%
C6297224835.699539%
D62971512.397967%

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 7431 6297 51 51 0.69% 0.81%
B 7431 6297 11 11 0.15% 0.17%
C 7432 6297 2309 2309 31.07% 36.67%
D 7432 6298 150 150 2.02% 2.38%

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 172699 1034.61 672 654 166.3
A 12 3 58355 346.99 672 654 166.3
A 8 249 52832 313.78 672 654 166.3
B 0 63 96982 669.53 673 647 143.9
B 10 247 73078 503.4 673 647 143.9
B 7 252 33547 228.66 673 647 143.9
C 15 230 6341634 43461.67 523 517 145.9
C 12 252 116826 797.18 523 517 145.9
C 1 16 112392 766.79 523 517 145.9
D 2 249 341568 1892.71 635 606 180.1
D 8 129 176901 978.63 635 606 180.1
D 3 12 111622 616.26 635 606 180.1

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