ASTROSAT CZTI

Data Quality Report

Orbit 55238

Creation date: 2025-12-14T12:42:54.899258
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_009T01_9000006534_55238cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55238cztM0_level2_quad_clean.evt
Size (bytes)473,336,64090,270,720
Size451.4 MB 86.1 MB
Events in quadrant A4,448,633569,847
Events in quadrant B3,189,210639,916
Events in quadrant C5,099,642542,985
Events in quadrant D4,281,819529,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181251
B0143311
C0196111
D0175311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64585408.361722%
B64571071.657116%
C64574987.712560%
D64583345.171880%

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 7282 6457 459 459 6.30% 7.11%
B 7281 6457 34 34 0.47% 0.53%
C 7281 6457 457 457 6.28% 7.08%
D 7282 6458 266 266 3.65% 4.12%

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 8 737808 4502.01 660 643 163.7
A 7 14 644534 3932.37 660 643 163.7
A 12 3 329888 2010.76 660 643 163.7
B 2 249 285230 1992.21 661 635 142.9
B 10 245 89143 619.57 661 635 142.9
B 0 182 71768 497.94 661 635 142.9
C 9 38 1033116 5880.73 633 625 175.6
C 1 16 529845 3014.27 633 625 175.6
C 13 3 418317 2379.04 633 625 175.6
D 8 160 1065788 5778.75 649 620 184.3
D 2 249 219499 1187.46 649 620 184.3
D 11 129 180528 976.03 649 620 184.3

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