ASTROSAT CZTI

Data Quality Report

Orbit 54285

Creation date: 2025-10-10T18:14:56.254967
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_54285cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54285cztM0_level2_quad_clean.evt
Size (bytes)506,505,60096,275,520
Size483.0 MB 91.8 MB
Events in quadrant A3,031,040663,266
Events in quadrant B4,210,103698,936
Events in quadrant C5,729,199525,789
Events in quadrant D5,259,797561,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138262
B0171312
C0220332
D0202792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6680951.422156%
B66811572.349948%
C6681111016.614279%
D66814096.121838%

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 7720 6680 5 5 0.06% 0.07%
B 7721 6681 54 54 0.70% 0.81%
C 7720 6680 1079 1079 13.98% 16.15%
D 7721 6681 286 286 3.70% 4.28%

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 11 3 74214 410.13 723 704 179.2
A 4 3 36266 198.41 723 704 179.2
A 4 78 28606 155.67 723 704 179.2
B 7 0 967337 6425.6 703 677 150.4
B 0 213 178046 1179.01 703 677 150.4
B 5 185 52195 342.45 703 677 150.4
C 1 241 3045372 17760.96 628 619 171.4
C 12 252 73967 427.86 628 619 171.4
C 14 254 71070 410.96 628 619 171.4
D 6 239 896928 4709.81 678 645 190.3
D 11 176 469643 2464.5 678 645 190.3
D 2 153 327636 1718.28 678 645 190.3

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