ASTROSAT CZTI

Data Quality Report

Orbit 54880

Creation date: 2025-11-19T20:07:29.942189
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_54880cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54880cztM0_level2_quad_clean.evt
Size (bytes)460,281,60091,601,280
Size439.0 MB 87.4 MB
Events in quadrant A3,115,318619,089
Events in quadrant B4,594,486597,988
Events in quadrant C4,057,985581,791
Events in quadrant D4,781,870536,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134271
B0180101
C0164061
D0184701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282811.289398%
B628273211.652340%
C62821893.008596%
D62823405.412289%

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 7397 6282 14 14 0.19% 0.22%
B 7397 6282 580 580 7.84% 9.23%
C 7397 6282 179 179 2.42% 2.85%
D 7397 6282 330 330 4.46% 5.25%

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 170115 979.62 700 683 173.0
A 0 8 142726 821.26 700 683 173.0
A 7 173 28780 162.45 700 683 173.0
B 5 185 1801380 12752.12 655 634 141.2
B 2 249 67610 474.3 655 634 141.2
B 10 247 38478 268.0 655 634 141.2
C 12 252 956569 5147.76 672 667 185.7
C 4 5 251815 1352.49 672 667 185.7
C 14 254 139435 747.3 672 667 185.7
D 11 176 771753 4086.41 668 638 188.7
D 2 207 265775 1405.05 668 638 188.7
D 2 120 195755 1033.99 668 638 188.7

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