ASTROSAT CZTI

Data Quality Report

Orbit 44840

Creation date: 2024-06-27T23:07:06.162414
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/AS1A13_017T01_9000006028_44840cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44840cztM0_level2_quad_clean.evt
Size (bytes)630,017,280125,688,960
Size600.8 MB 119.9 MB
Events in quadrant A5,839,534849,711
Events in quadrant B4,094,857871,978
Events in quadrant C3,661,325845,052
Events in quadrant D9,116,880692,153

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240412
B0176942
C0167762
D0326822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78592082.646647%
B78592142.722993%
C7859720.916147%
D785998712.558850%

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 8599 7861 5 5 0.06% 0.06%
B 8599 7861 31 31 0.36% 0.39%
C 8599 7861 21 21 0.24% 0.27%
D 8599 7861 799 799 9.29% 10.16%

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 10 83 2319737 12383.72 898 878 187.3
A 13 248 41096 214.78 898 878 187.3
A 3 137 10710 52.51 898 878 187.3
B 0 155 165860 926.55 901 872 178.1
B 5 255 101017 562.4 901 872 178.1
B 5 172 84570 470.04 901 872 178.1
C 12 2 112646 531.36 891 896 210.3
C 3 233 30016 138.46 891 896 210.3
C 1 3 16892 76.06 891 896 210.3
D 11 241 1620922 7656.78 841 816 211.6
D 1 52 1563486 7385.33 841 816 211.6
D 13 187 1156589 5462.3 841 816 211.6

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