ASTROSAT CZTI

Data Quality Report

Orbit 46228

Creation date: 2024-06-27T23:20:33.122069
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_065T03_9000006186_46228cztM0_level2.fits modeM0/AS1A13_065T03_9000006186_46228cztM0_level2_quad_clean.evt
Size (bytes)520,787,520118,411,200
Size496.7 MB 112.9 MB
Events in quadrant A6,926,366783,298
Events in quadrant B4,301,131839,023
Events in quadrant C3,749,654781,972
Events in quadrant D3,782,808716,044

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255182
B0171622
C0154152
D0155242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66804737.080838%
B66791962.934571%
C66792103.144183%
D66792053.069322%

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 7830 6680 112 112 1.43% 1.68%
B 7829 6679 31 31 0.40% 0.46%
C 7829 6679 113 113 1.44% 1.69%
D 7829 6679 86 86 1.10% 1.29%

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 3323196 19344.94 829 812 171.7
A 0 247 244504 1418.92 829 812 171.7
A 7 3 90171 520.3 829 812 171.7
B 3 112 694769 4240.49 834 811 163.7
B 10 246 131505 798.62 834 811 163.7
B 5 255 59767 360.26 834 811 163.7
C 12 2 287128 1486.44 818 824 192.6
C 14 254 247072 1278.48 818 824 192.6
C 1 3 24057 120.62 818 824 192.6
D 13 249 244694 1192.13 821 799 204.6
D 5 235 77471 374.76 821 799 204.6
D 2 249 62848 303.29 821 799 204.6

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