ASTROSAT CZTI

Data Quality Report

Orbit 10681

Creation date: 2024-06-27T16:02:24.475034
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/AS1A03_097T01_9000001540_10681cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10681cztM0_level2_quad_clean.evt
Size (bytes)573,324,48090,054,720
Size546.8 MB 85.9 MB
Events in quadrant A3,709,739581,161
Events in quadrant B5,469,742569,509
Events in quadrant C2,955,629598,527
Events in quadrant D4,814,726551,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150452
B0204061
C0127621
D0184021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61072413.946291%
B610768611.233011%
C6107460.753234%
D61071953.193057%

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 7427 6108 183 183 2.46% 3.00%
B 7427 6108 464 464 6.25% 7.60%
C 7427 6108 1 1 0.01% 0.02%
D 7427 6108 123 123 1.66% 2.01%

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 15 239 519715 3485.72 749 735 148.9
A 4 2 124748 832.93 749 735 148.9
A 13 251 75212 500.22 749 735 148.9
B 4 239 1684133 12214.34 741 724 137.8
B 0 85 517041 3746.25 741 724 137.8
B 4 81 187043 1351.88 741 724 137.8
C 14 234 10314 55.46 750 756 172.4
C 4 175 8624 45.65 750 756 172.4
C 13 61 5665 28.48 750 756 172.4
D 2 16 936013 5305.82 738 720 176.3
D 8 195 298695 1690.38 738 720 176.3
D 10 199 173893 982.39 738 720 176.3

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