ASTROSAT CZTI

Data Quality Report

Orbit 54304

Creation date: 2025-10-12T21:10:44.875028
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_126T15_9000006516_54304cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54304cztM0_level2_quad_clean.evt
Size (bytes)703,753,92096,554,880
Size671.2 MB 92.1 MB
Events in quadrant A3,833,795684,729
Events in quadrant B5,217,196707,323
Events in quadrant C7,106,556547,411
Events in quadrant D9,327,963475,832

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166990
B0204510
C0264950
D0327740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72951171.603838%
B72952903.975326%
C7295132818.204249%
D7295185125.373544%

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 7295 7295 78 78 1.07% 1.07%
B 7295 7295 226 226 3.10% 3.10%
C 7295 7295 984 984 13.49% 13.49%
D 7295 7295 1619 1619 22.19% 22.19%

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 7 29 461037 2427.36 764 744 189.6
A 0 8 161797 849.31 764 744 189.6
A 4 3 76598 400.02 764 744 189.6
B 7 0 1366658 8478.76 745 718 161.1
B 5 185 600912 3725.57 745 718 161.1
B 7 252 100147 617.18 745 718 161.1
C 15 157 3946744 20831.19 688 684 189.4
C 14 254 146025 767.25 688 684 189.4
C 1 241 108261 567.9 688 684 189.4
D 8 176 5691530 30189.02 660 628 188.5
D 7 70 393112 2082.04 660 628 188.5
D 3 12 263000 1391.83 660 628 188.5

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