ASTROSAT CZTI

Data Quality Report

Orbit 31247

Creation date: 2024-06-27T20:25:34.949574
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_073T02_9000004522_31247cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31247cztM0_level2_quad_clean.evt
Size (bytes)644,339,52073,584,000
Size614.5 MB 70.2 MB
Events in quadrant A3,195,658459,400
Events in quadrant B5,375,677457,153
Events in quadrant C3,607,972436,258
Events in quadrant D6,888,056414,267

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135772
B0205782
C0145682
D0250832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6604230.348274%
B66041271.923077%
C66041502.271351%
D66045137.768019%

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 7674 6605 0 0 0.00% 0.00%
B 7674 6605 25 25 0.33% 0.38%
C 7674 6605 45 45 0.59% 0.68%
D 7674 6605 381 381 4.96% 5.77%

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 11 47 15131 86.64 824 808 165.3
A 13 254 11903 67.11 824 808 165.3
A 3 137 8079 43.98 824 808 165.3
B 6 159 1805565 11534.96 818 797 156.5
B 4 80 195814 1246.43 818 797 156.5
B 0 190 112006 710.78 818 797 156.5
C 0 10 287869 1553.89 790 796 184.7
C 14 238 129271 695.42 790 796 184.7
C 3 233 72744 389.44 790 796 184.7
D 8 195 3582181 18212.64 769 751 196.6
D 12 233 244034 1237.17 769 751 196.6
D 2 250 79836 402.17 769 751 196.6

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