ASTROSAT CZTI

Data Quality Report

Orbit 59123

Creation date: 2026-09-01T06:18:47.315632
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_004T02_9000006600_59123cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59123cztM0_level2_quad_clean.evt
Size (bytes)721,008,00085,452,480
Size687.6 MB 81.5 MB
Events in quadrant A3,160,380652,704
Events in quadrant B3,349,702693,720
Events in quadrant C6,596,631597,933
Events in quadrant D13,088,551198,446

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140092
B0144502
C0240852
D0431852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6369711.114775%
B63691622.543570%
C63693876.076307%
D6369437868.739206%

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 7574 6370 44 44 0.58% 0.69%
B 7574 6370 73 73 0.96% 1.15%
C 7574 6370 266 266 3.51% 4.18%
D 7573 6368 3783 3783 49.95% 59.41%

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 166435 941.31 713 695 176.1
A 10 251 117144 661.37 713 695 176.1
A 13 248 43455 242.85 713 695 176.1
B 4 236 323087 2131.7 704 676 151.2
B 5 185 89486 587.19 704 676 151.2
B 5 236 47247 307.92 704 676 151.2
C 3 233 3223139 17294.12 681 675 186.3
C 6 223 250500 1340.75 681 675 186.3
C 12 252 160004 855.08 681 675 186.3
D 12 1 10883141 108673.17 344 328 100.1
D 12 110 601428 6002.44 344 328 100.1
D 2 207 88041 875.88 344 328 100.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct