ASTROSAT CZTI

Data Quality Report

Orbit 52619

Creation date: 2025-06-24T11:58:29.075320
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/AS1C09_011T06_9000006478_52619cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52619cztM0_level2_quad_clean.evt
Size (bytes)1,068,696,00075,205,440
Size1019.2 MB 71.7 MB
Events in quadrant A3,691,004656,534
Events in quadrant B6,749,360674,292
Events in quadrant C18,183,3128,396
Events in quadrant D10,381,893438,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162540
B0251230
C0588170
D0358260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7167971.353425%
B71685397.519531%
C7168709198.925781%
D7168217530.343192%

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 7167 7167 55 55 0.77% 0.77%
B 7168 7168 196 196 2.73% 2.73%
C 7167 7167 6275 6275 87.55% 87.55%
D 7168 7168 1953 1953 27.25% 27.25%

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 46 375551 2020.85 736 717 185.5
A 7 190 90177 482.31 736 717 185.5
A 8 246 74195 396.14 736 717 185.5
B 10 254 2638290 17440.31 713 690 151.2
B 10 128 405241 2674.97 713 690 151.2
B 8 234 234484 1545.89 713 690 151.2
C 15 248 17528311 476093.43 127 126 36.8
C 12 254 74829 2029.05 127 126 36.8
C 1 44 18404 496.46 127 126 36.8
D 2 62 2692326 15163.75 624 596 177.5
D 8 176 1741332 9806.36 624 596 177.5
D 6 42 1192721 6715.79 624 596 177.5

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