ASTROSAT CZTI

Data Quality Report

Orbit 58786

Creation date: 2026-08-09T15:56:42.656313
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_58786cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58786cztM0_level2_quad_clean.evt
Size (bytes)2,722,161,600368,591,040
Size2.5 GB 351.5 MB
Events in quadrant A17,560,0582,582,578
Events in quadrant B14,789,5782,840,009
Events in quadrant C14,818,8142,540,143
Events in quadrant D51,458,9191,292,020

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0714105
B0628907
C0637865
D01720105

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05600
B05600
C05600
D05600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2770714815.345220%
B277066522.353281%
C277066302.273876%
D277071322847.742448%

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 31237 27708 934 934 2.99% 3.37%
B 31236 27708 244 244 0.78% 0.88%
C 31236 27709 407 407 1.30% 1.47%
D 31236 27706 12243 12243 39.20% 44.19%

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 3297767 4405.46 3045 2971 747.9
A 3 14 2069641 2763.34 3045 2971 747.9
A 3 245 94620 122.54 3045 2971 747.9
B 4 171 405318 627.02 3045 2927 641.8
B 8 234 375337 580.3 3045 2927 641.8
B 4 236 338262 522.53 3045 2927 641.8
C 4 5 908666 1107.32 2991 2966 817.9
C 13 3 811539 988.57 2991 2966 817.9
C 6 223 594922 723.73 2991 2966 817.9
D 12 110 21913867 31743.78 2401 2286 690.3
D 11 129 18537586 26852.49 2401 2286 690.3
D 5 32 418986 603.68 2401 2286 690.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct