ASTROSAT CZTI

Data Quality Report

Orbit 20190429_A05_025T17_9000002868_level2

Creation date: 2025-11-29T17:04:36.307960
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/AS1A05_025T17_9000002868cztM0_level2.fits modeM0/AS1A05_025T17_9000002868cztM0_level2_quad_clean.evt
Size (bytes)135,512,640109,840,320
Size129.2 MB 104.8 MB
Events in quadrant A939,158743,322
Events in quadrant B888,532731,256
Events in quadrant C880,192677,160
Events in quadrant D483,968265,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287670
B0291430
C0282380
D0927970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131373042.314075%
B131373292.504377%
C131373582.725128%
D131371000176.128492%

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 17042 13134 0 0 0.00% 0.00%
B 17042 13134 0 0 0.00% 0.00%
C 17042 13134 0 0 0.00% 0.00%
D 17042 13008 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 29 936 11.87 245 233 59.2
A 7 110 770 9.07 245 233 59.2
A 9 19 736 8.5 245 233 59.2
B 2 9 653 8.87 236 227 48.0
B 5 128 597 7.71 236 227 48.0
B 2 8 573 7.2 236 227 48.0
C 1 80 664 7.37 232 220 60.2
C 1 81 642 7.01 232 220 60.2
C 9 188 610 6.47 232 220 60.2
D 4 246 385 6.7 138 126 38.7
D 3 14 358 6.0 138 126 38.7
D 6 83 351 5.82 138 126 38.7

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