ASTROSAT CZTI

Data Quality Report

Orbit 54642

Creation date: 2025-11-03T20:16:10.881857
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_066T07_9000006522_54642cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54642cztM0_level2_quad_clean.evt
Size (bytes)534,790,08094,420,800
Size510.0 MB 90.0 MB
Events in quadrant A3,542,734625,360
Events in quadrant B3,163,670676,947
Events in quadrant C7,688,662536,266
Events in quadrant D4,877,872550,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152611
B0142231
C0275641
D0190791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67382213.279905%
B67391161.721324%
C673996514.319632%
D67394015.950438%

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 7523 6739 98 98 1.30% 1.45%
B 7524 6740 10 10 0.13% 0.15%
C 7524 6739 725 725 9.64% 10.76%
D 7524 6740 293 293 3.89% 4.35%

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 7 190 312377 1712.4 743 724 182.0
A 11 3 113166 617.82 743 724 182.0
A 5 240 88912 484.56 743 724 182.0
B 5 172 64561 402.32 734 706 158.7
B 7 0 44701 277.19 734 706 158.7
B 7 252 39840 246.56 734 706 158.7
C 9 38 3336645 17577.34 691 683 189.8
C 1 16 1003685 5284.86 691 683 189.8
C 13 3 409532 2154.24 691 683 189.8
D 8 160 1391343 6873.85 714 683 202.3
D 6 239 177878 875.85 714 683 202.3
D 15 94 131479 646.51 714 683 202.3

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