ASTROSAT CZTI

Data Quality Report

Orbit 20210624_A10_071T56_9000004484_level2

Creation date: 2025-12-27T06:10:29.654853
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/AS1A10_071T56_9000004484cztM0_level2.fits modeM0/AS1A10_071T56_9000004484cztM0_level2_quad_clean.evt
Size (bytes)345,006,720129,856,320
Size329.0 MB 123.8 MB
Events in quadrant A2,227,884474,667
Events in quadrant B2,076,288462,617
Events in quadrant C2,129,238443,523
Events in quadrant D1,741,276276,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0712680
B01042060
C0722610
D01218960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330663311.001028%
B330668752.646223%
C330667702.328676%
D33066480014.516422%

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 40596 33060 0 0 0.00% 0.00%
B 40596 33054 0 0 0.00% 0.00%
C 40596 33059 0 0 0.00% 0.00%
D 40595 33055 0 0 0.00% 0.00%

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 0 29 1851 9.13 580 548 142.6
A 7 110 1758 8.48 580 548 142.6
A 0 30 1643 7.68 580 548 142.6
B 2 9 1628 10.0 550 528 110.0
B 5 128 1397 7.9 550 528 110.0
B 2 8 1357 7.53 550 528 110.0
C 1 81 1731 8.39 562 529 143.3
C 1 80 1613 7.57 562 529 143.3
C 3 202 1603 7.5 562 529 143.3
D 15 46 1297 6.29 497 453 134.1
D 7 3 1253 5.96 497 453 134.1
D 3 14 1235 5.83 497 453 134.1

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