ASTROSAT CZTI

Data Quality Report

Orbit 24225

Creation date: 2024-06-27T19:03:42.176594
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/AS1A07_118T01_9000003586_24225cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24225cztM0_level2_quad_clean.evt
Size (bytes)570,672,00078,825,600
Size544.2 MB 75.2 MB
Events in quadrant A3,281,629487,912
Events in quadrant B4,514,418492,389
Events in quadrant C3,714,782469,380
Events in quadrant D5,313,016465,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140042
B0177453
C0149382
D0203732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771510.753212%
B67706439.497784%
C67701502.215657%
D67702403.545052%

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 7686 6771 0 0 0.00% 0.00%
B 7685 6770 453 453 5.89% 6.69%
C 7685 6770 31 31 0.40% 0.46%
D 7685 6770 110 110 1.43% 1.62%

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 13 254 11606 62.65 849 830 172.0
A 3 137 7427 38.35 849 830 172.0
A 0 226 7209 37.08 849 830 172.0
B 0 245 1284949 8292.61 808 788 154.9
B 15 33 44967 285.29 808 788 154.9
B 12 111 18635 115.25 808 788 154.9
C 2 16 232780 1216.6 810 815 190.7
C 7 247 176788 922.93 810 815 190.7
C 14 238 127218 662.95 810 815 190.7
D 8 195 1666090 8258.64 822 799 201.6
D 12 233 277024 1369.88 822 799 201.6
D 7 238 249863 1235.18 822 799 201.6

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