ASTROSAT CZTI

Data Quality Report

Orbit 03931

Creation date: 2024-06-27T14:35:23.080712
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/AS1G05_172T01_9000000502_03931cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03931cztM0_level2_quad_clean.evt
Size (bytes)1,749,021,120257,011,200
Size1.6 GB 245.1 MB
Events in quadrant A11,053,5501,570,771
Events in quadrant B14,729,8041,543,231
Events in quadrant C10,080,7381,566,340
Events in quadrant D15,512,3541,479,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04820
B04820
C04820
D04820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495496
B0591618
C0478635
D06349710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A235822871.217030%
B235814962.103388%
C23582610.258672%
D2358015566.598813%

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 25697 23587 52 52 0.20% 0.22%
B 25697 23587 177 177 0.69% 0.75%
C 25697 23587 1 1 0.00% 0.00%
D 25697 23587 1285 1285 5.00% 5.45%

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 0 118 342594 627.58 2661 2603 541.7
A 0 50 146277 265.2 2661 2603 541.7
A 13 251 85902 153.76 2661 2603 541.7
B 3 0 2658002 5155.42 2667 2599 515.1
B 15 204 592138 1144.58 2667 2599 515.1
B 10 16 541136 1045.56 2667 2599 515.1
C 10 65 39415 62.13 2559 2570 593.0
C 12 4 22482 33.58 2559 2570 593.0
C 13 61 21604 32.1 2559 2570 593.0
D 2 232 3046855 5105.3 2494 2420 596.3
D 8 112 1546231 2588.86 2494 2420 596.3
D 1 7 329446 548.4 2494 2420 596.3

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
Veto Counter