ASTROSAT CZTI

Data Quality Report

Orbit 54892

Creation date: 2025-11-20T14:02:43.517984
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_039T06_9000006526_54892cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54892cztM0_level2_quad_clean.evt
Size (bytes)376,133,76087,174,720
Size358.7 MB 83.1 MB
Events in quadrant A3,579,351564,951
Events in quadrant B2,601,166614,444
Events in quadrant C3,515,398543,130
Events in quadrant D3,764,262501,610

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149131
B0122217
C0146581
D0153051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59521272.133737%
B5949641.075811%
C5952801.344086%
D59522113.545027%

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 6987 5953 54 54 0.77% 0.91%
B 6987 5953 2 2 0.03% 0.03%
C 6987 5953 71 71 1.02% 1.19%
D 6987 5953 169 169 2.42% 2.84%

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 907760 5777.66 636 622 157.0
A 0 117 89033 563.1 636 622 157.0
A 0 250 57646 363.19 636 622 157.0
B 10 247 29541 216.39 627 606 133.7
B 5 236 25385 185.31 627 606 133.7
B 12 111 16377 117.94 627 606 133.7
C 4 5 654749 3854.41 616 611 169.7
C 6 223 119627 701.28 616 611 169.7
C 12 252 90798 531.41 616 611 169.7
D 10 181 200515 1149.53 611 585 173.9
D 11 176 184339 1056.53 611 585 173.9
D 6 46 164598 943.02 611 585 173.9

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