ASTROSAT CZTI

Data Quality Report

Orbit 53833

Creation date: 2025-09-10T07:58:15.751545
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_022T04_9000006506_53833cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53833cztM0_level2_quad_clean.evt
Size (bytes)665,737,92077,630,400
Size634.9 MB 74.0 MB
Events in quadrant A2,776,330586,623
Events in quadrant B3,559,127607,964
Events in quadrant C9,643,238334,384
Events in quadrant D8,207,491409,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125391
B0147311
C0327121
D0283631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5897510.864847%
B58962955.003392%
C5896265244.979647%
D5896153125.966757%

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 7102 5897 10 10 0.14% 0.17%
B 7101 5897 179 179 2.52% 3.04%
C 7100 5895 2580 2580 36.34% 43.77%
D 7101 5897 1577 1577 22.21% 26.74%

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 4 249 115897 731.86 640 623 157.5
A 8 249 42590 266.44 640 623 157.5
A 12 17 28804 178.92 640 623 157.5
B 5 185 842967 6298.0 625 604 133.8
B 8 234 113936 847.34 625 604 133.8
B 5 172 50176 370.63 625 604 133.8
C 1 241 5900592 43051.28 491 486 137.0
C 15 224 1178677 8596.9 491 486 137.0
C 1 16 195613 1423.78 491 486 137.0
D 15 93 4643760 29556.53 548 524 157.1
D 2 172 678107 4313.16 548 524 157.1
D 8 176 262225 1665.86 548 524 157.1

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