ASTROSAT CZTI

Data Quality Report

Orbit 20210114_A10_073T08_9000004112_level2

Creation date: 2025-12-19T18:41:36.222967
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_073T08_9000004112cztM0_level2.fits modeM0/AS1A10_073T08_9000004112cztM0_level2_quad_clean.evt
Size (bytes)964,212,480789,765,120
Size919.5 MB 753.2 MB
Events in quadrant A6,101,2184,630,162
Events in quadrant B5,707,7964,555,886
Events in quadrant C5,799,4984,346,918
Events in quadrant D5,003,5823,798,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02132000
B02374880
C02071610
D02936830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019540
B019540
C019540
D019540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9607421862.275329%
B9607345224.706838%
C9607437233.875138%
D9607466116.881154%

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 109409 96064 0 0 0.00% 0.00%
B 109410 96064 0 0 0.00% 0.00%
C 109409 95998 0 0 0.00% 0.00%
D 109410 95915 0 0 0.00% 0.00%

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 29 5658 10.74 1589 1493 387.8
A 7 110 4795 8.51 1589 1493 387.8
A 0 30 4483 7.71 1589 1493 387.8
B 2 9 4457 10.14 1513 1445 296.9
B 3 80 3925 8.35 1513 1445 296.9
B 3 17 3826 8.02 1513 1445 296.9
C 3 126 3967 6.52 1533 1431 388.9
C 12 241 3895 6.34 1533 1431 388.9
C 9 209 3836 6.18 1533 1431 388.9
D 3 14 3676 6.28 1429 1303 378.0
D 15 46 3645 6.2 1429 1303 378.0
D 6 231 3540 5.92 1429 1303 378.0

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