ASTROSAT CZTI

Data Quality Report

Orbit 55377

Creation date: 2025-12-23T10:02:08.257205
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_55377cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55377cztM0_level2_quad_clean.evt
Size (bytes)509,244,480109,788,480
Size485.7 MB 104.7 MB
Events in quadrant A5,723,076697,158
Events in quadrant B4,164,960758,531
Events in quadrant C3,595,351699,844
Events in quadrant D4,765,128629,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022630130
B01825443
C01691096
D01984640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77404475.775194%
B77483033.910687%
C7747811.045566%
D77514475.766998%

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 7803 7746 256 256 3.28% 3.30%
B 7803 7754 150 150 1.92% 1.93%
C 7803 7754 32 32 0.41% 0.41%
D 7803 7756 297 297 3.81% 3.83%

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 4 159 1739646 8539.22 820 800 203.6
A 12 115 431620 2115.69 820 800 203.6
A 11 31 157730 770.66 820 800 203.6
B 5 185 439987 2515.91 814 785 174.6
B 0 199 195434 1115.02 814 785 174.6
B 2 249 75316 426.94 814 785 174.6
C 12 249 138056 613.34 814 807 223.8
C 13 3 81502 360.61 814 807 223.8
C 12 250 63766 281.35 814 807 223.8
D 11 129 530301 2430.85 769 735 217.9
D 15 107 436311 1999.41 769 735 217.9
D 2 249 168315 769.24 769 735 217.9

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