ASTROSAT CZTI

Data Quality Report

Orbit 55333

Creation date: 2025-12-20T17:25:09.161293
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_55333cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55333cztM0_level2_quad_clean.evt
Size (bytes)507,006,720102,003,840
Size483.5 MB 97.3 MB
Events in quadrant A4,651,858652,166
Events in quadrant B3,392,612720,177
Events in quadrant C6,063,149603,792
Events in quadrant D4,099,357609,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190772
B0156812
C0231522
D0173442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72203364.653740%
B7220700.969529%
C72215898.156765%
D72211021.412547%

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 7650 7221 275 275 3.59% 3.81%
B 7650 7221 18 18 0.24% 0.25%
C 7651 7222 505 505 6.60% 6.99%
D 7651 7222 60 60 0.78% 0.83%

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 958900 5258.22 739 721 182.2
A 3 78 426182 2334.81 739 721 182.2
A 3 14 296541 1623.38 739 721 182.2
B 0 199 177227 1090.79 751 723 161.8
B 7 252 105641 648.39 751 723 161.8
B 10 247 49117 299.07 751 723 161.8
C 9 38 2707640 13645.58 718 711 198.4
C 13 3 285239 1434.3 718 711 198.4
C 12 249 70173 350.16 718 711 198.4
D 11 129 272801 1311.15 735 702 207.5
D 6 239 172493 827.8 735 702 207.5
D 3 13 157725 756.64 735 702 207.5

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