ASTROSAT CZTI

Data Quality Report

Orbit 57194

Creation date: 2026-04-24T13:02:13.772242
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/AS1A14_070T08_9000006568_57194cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57194cztM0_level2_quad_clean.evt
Size (bytes)559,785,600105,454,080
Size533.9 MB 100.6 MB
Events in quadrant A3,213,090710,730
Events in quadrant B3,656,689764,998
Events in quadrant C7,598,689594,759
Events in quadrant D5,666,694597,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154250
B0163300
C0278286
D0222970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7550140.185430%
B75511011.337571%
C7550106414.092715%
D75505337.059603%

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 7550 7550 2 2 0.03% 0.03%
B 7551 7551 38 38 0.50% 0.50%
C 7550 7550 864 864 11.44% 11.44%
D 7550 7550 544 544 7.21% 7.21%

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 3 14 86299 430.71 799 777 198.6
A 13 248 16943 81.42 799 777 198.6
A 8 6 11853 55.78 799 777 198.6
B 0 199 100054 592.42 793 763 167.6
B 7 252 97981 580.05 793 763 167.6
B 5 185 69360 409.28 793 763 167.6
C 15 224 2818071 14065.48 740 732 200.3
C 3 248 1450203 7236.44 740 732 200.3
C 14 67 143402 712.28 740 732 200.3
D 12 33 1367986 6485.73 751 716 210.8
D 12 3 763783 3619.66 751 716 210.8
D 2 31 98897 465.73 751 716 210.8

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