ASTROSAT CZTI

Data Quality Report

Orbit 57054

Creation date: 2026-04-15T02:48:52.230042
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_57054cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57054cztM0_level2_quad_clean.evt
Size (bytes)480,286,08096,459,840
Size458.0 MB 92.0 MB
Events in quadrant A3,558,697642,016
Events in quadrant B3,730,876665,272
Events in quadrant C4,339,495594,404
Events in quadrant D5,618,888542,574

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154922
B0159432
C0177852
D0212492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6834801.170618%
B68342974.345917%
C68342804.097161%
D68334726.907654%

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 7649 6835 35 35 0.46% 0.51%
B 7649 6835 187 187 2.44% 2.74%
C 7649 6835 234 234 3.06% 3.42%
D 7648 6834 519 519 6.79% 7.59%

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 470360 2606.38 730 711 180.2
A 13 248 74512 409.57 730 711 180.2
A 4 249 65445 359.25 730 711 180.2
B 10 16 670623 4473.24 704 678 149.8
B 0 63 156334 1039.32 704 678 149.8
B 10 32 27952 182.11 704 678 149.8
C 9 38 1325274 6960.48 695 689 190.3
C 1 16 142122 743.21 695 689 190.3
C 11 244 33957 174.82 695 689 190.3
D 15 142 2198832 11267.1 681 648 195.1
D 2 172 199056 1016.97 681 648 195.1
D 2 249 143123 730.28 681 648 195.1

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