ASTROSAT CZTI

Data Quality Report

Orbit 31836

Creation date: 2024-06-27T20:33:20.720610
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_109T01_9000004646_31836cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31836cztM0_level2_quad_clean.evt
Size (bytes)539,657,280104,497,920
Size514.7 MB 99.7 MB
Events in quadrant A3,332,386687,050
Events in quadrant B5,300,884679,682
Events in quadrant C3,588,981660,914
Events in quadrant D3,646,868649,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145051
B0211911
C0151681
D0155681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6998450.643041%
B69981231.757645%
C69981602.286368%
D6999701.000143%

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 7218 7000 0 0 0.00% 0.00%
B 7218 7000 1 1 0.01% 0.01%
C 7218 7000 2 2 0.03% 0.03%
D 7219 7001 41 41 0.57% 0.59%

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 12599 67.25 862 845 174.8
A 3 137 8778 45.39 862 845 174.8
A 0 226 7199 36.35 862 845 174.8
B 6 159 1895052 11557.46 849 828 163.9
B 0 213 22414 131.71 849 828 163.9
B 12 111 20453 119.74 849 828 163.9
C 14 238 146426 737.16 831 839 197.5
C 3 233 106283 533.9 831 839 197.5
C 0 10 57869 288.76 831 839 197.5
D 8 195 250719 1259.74 834 814 198.4
D 2 250 99277 496.34 834 814 198.4
D 12 218 49243 244.12 834 814 198.4

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