ASTROSAT CZTI

Data Quality Report

Orbit 40444

Creation date: 2024-06-27T22:16:10.493421
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/AS1A12_022T01_9000005540_40444cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40444cztM0_level2_quad_clean.evt
Size (bytes)309,430,08088,493,760
Size295.1 MB 84.4 MB
Events in quadrant A2,737,317609,833
Events in quadrant B2,442,612625,846
Events in quadrant C2,568,144587,250
Events in quadrant D3,305,019496,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112063
B0105622
C0107512
D0130632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5137140.272533%
B5137200.389332%
C5137150.291999%
D51374929.577574%

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 7050 5138 4 4 0.06% 0.08%
B 7050 5138 8 8 0.11% 0.16%
C 7050 5138 15 15 0.21% 0.29%
D 7050 5138 186 186 2.64% 3.62%

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 456937 3804.7 586 576 119.9
A 7 3 8910 69.48 586 576 119.9
A 3 137 6250 47.3 586 576 119.9
B 4 170 96299 864.8 578 563 110.7
B 0 245 31790 282.08 578 563 110.7
B 3 112 31605 280.41 578 563 110.7
C 15 214 226609 1742.93 561 565 129.7
C 14 254 123068 944.57 561 565 129.7
C 0 10 10149 73.9 561 565 129.7
D 12 227 880954 6637.35 541 526 132.6
D 12 191 129321 970.96 541 526 132.6
D 9 19 85656 641.78 541 526 132.6

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