ASTROSAT CZTI

Data Quality Report

Orbit 58776

Creation date: 2026-08-09T13:51:20.241469
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_106T01_9000006596_58776cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58776cztM0_level2_quad_clean.evt
Size (bytes)695,782,08075,974,400
Size663.5 MB 72.5 MB
Events in quadrant A2,970,000615,142
Events in quadrant B3,745,197644,060
Events in quadrant C3,912,962570,749
Events in quadrant D14,647,26539,481

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01322035
B01533747
C016065104
D047954319

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01282
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172741.198963%
B61701592.576985%
C61682654.296368%
D6148583294.860117%

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 7138 6182 27 27 0.38% 0.44%
B 7139 6187 70 70 0.98% 1.13%
C 7139 6183 183 183 2.56% 2.96%
D 7132 6149 5281 5281 74.05% 85.88%

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 15 233 79527 461.83 692 674 170.7
A 10 251 70454 408.7 692 674 170.7
A 3 14 33219 190.61 692 674 170.7
B 0 171 372380 2555.75 681 656 145.4
B 8 234 205119 1405.76 681 656 145.4
B 8 128 147587 1010.21 681 656 145.4
C 2 12 590338 3247.27 664 658 181.6
C 13 3 171790 942.39 664 658 181.6
C 9 38 138737 760.38 664 658 181.6
D 12 110 8329878 73937.87 395 378 112.7
D 11 129 4393775 38998.55 395 378 112.7
D 2 249 113128 1000.84 395 378 112.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct