ASTROSAT CZTI

Data Quality Report

Orbit 54811

Creation date: 2025-11-15T04:18:41.782262
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_039T06_9000006526_54811cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54811cztM0_level2_quad_clean.evt
Size (bytes)679,844,160103,677,120
Size648.3 MB 98.9 MB
Events in quadrant A3,520,969735,304
Events in quadrant B4,548,160758,583
Events in quadrant C5,385,590676,945
Events in quadrant D11,100,968422,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165671
B0191031
C0217551
D0385571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7856730.929226%
B78563244.124236%
C78553414.341184%
D7855305038.828771%

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 7911 7858 18 18 0.23% 0.23%
B 7911 7856 158 158 2.00% 2.01%
C 7910 7856 207 207 2.62% 2.63%
D 7910 7855 2926 2926 36.99% 37.25%

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 6 161 76163 366.48 834 813 205.6
A 3 94 61951 297.36 834 813 205.6
A 5 240 49088 234.8 834 813 205.6
B 1 207 461643 2651.41 811 782 173.8
B 7 0 303157 1739.62 811 782 173.8
B 5 185 293764 1685.58 811 782 173.8
C 9 38 1127684 5095.28 801 795 221.2
C 4 5 407667 1839.69 801 795 221.2
C 9 237 219687 989.73 801 795 221.2
D 15 94 7510899 41171.78 632 603 182.4
D 1 31 342049 1871.82 632 603 182.4
D 12 6 211333 1155.23 632 603 182.4

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