ASTROSAT CZTI

Data Quality Report

Orbit 58773

Creation date: 2026-08-09T12:48:59.348502
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_106T01_9000006596_58773cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58773cztM0_level2_quad_clean.evt
Size (bytes)530,182,08059,178,240
Size505.6 MB 56.4 MB
Events in quadrant A2,258,455485,977
Events in quadrant B3,399,502495,731
Events in quadrant C2,853,740442,390
Events in quadrant D10,749,93739,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119882040
B0158572595
C0140442334
D0425827618

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011725
B011824
C011414
D011719

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46911072.280964%
B46793156.732208%
C46822435.190090%
D4596426192.711053%

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 7168 4757 4 4 0.06% 0.08%
B 7158 4753 150 150 2.10% 3.16%
C 7156 4747 131 131 1.83% 2.76%
D 7097 4623 3684 3684 51.91% 79.69%

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 15 233 60709 443.89 547 533 135.6
A 3 14 23144 166.79 547 533 135.6
A 5 113 20042 143.91 547 533 135.6
B 8 234 350335 3083.24 528 510 113.5
B 0 171 280622 2468.81 528 510 113.5
B 10 44 197828 1739.1 528 510 113.5
C 13 3 217766 1500.96 519 514 144.7
C 15 182 195297 1345.72 519 514 144.7
C 6 223 123901 852.46 519 514 144.7
D 12 110 6281454 69564.98 314 299 90.3
D 11 129 2269564 25132.54 314 299 90.3
D 12 128 362881 4015.66 314 299 90.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct