ASTROSAT CZTI

Data Quality Report

Orbit 11428

Creation date: 2024-06-27T16:12:45.049697
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/AS1A04_024T04_9000001670_11428cztM0_level2.evt modeM0/AS1A04_024T04_9000001670_11428cztM0_level2_quad_clean.evt
Size (bytes)1,368,267,840213,419,520
Size1.3 GB 203.5 MB
Events in quadrant A7,779,0991,352,185
Events in quadrant B10,803,6421,347,267
Events in quadrant C7,348,6981,371,767
Events in quadrant D14,383,1631,244,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341152
B0430492
C0335652
D0541722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16653500.300246%
B166537934.761905%
C16653420.252207%
D1665312797.680298%

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 17548 16655 3 3 0.02% 0.02%
B 17548 16655 411 411 2.34% 2.47%
C 17548 16655 0 0 0.00% 0.00%
D 17548 16655 1009 1009 5.75% 6.06%

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 13 251 144848 368.28 1913 1873 388.2
A 1 162 84704 213.36 1913 1873 388.2
A 8 15 52731 131.0 1913 1873 388.2
B 4 239 2395279 6711.67 1893 1849 356.6
B 3 64 546998 1528.71 1893 1849 356.6
B 15 204 147427 408.23 1893 1849 356.6
C 13 250 15179 30.78 1873 1882 432.0
C 8 128 15099 30.6 1873 1882 432.0
C 13 61 13678 27.31 1873 1882 432.0
D 1 52 3751891 8593.87 1815 1766 436.4
D 13 152 2865159 6561.81 1815 1766 436.4
D 9 85 171936 389.97 1815 1766 436.4

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