ASTROSAT CZTI

Data Quality Report

Orbit 55187

Creation date: 2025-12-10T12:17:27.091834
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_022T16_9000006532_55187cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55187cztM0_level2_quad_clean.evt
Size (bytes)413,948,160103,714,560
Size394.8 MB 98.9 MB
Events in quadrant A4,078,980665,042
Events in quadrant B3,251,303724,764
Events in quadrant C3,592,858641,157
Events in quadrant D3,837,606606,149

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173132
B0153923
C0161002
D0168122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72261872.587877%
B72251331.840830%
C72251001.384083%
D7225841.162630%

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 8001 7227 82 82 1.02% 1.13%
B 8000 7226 26 26 0.33% 0.36%
C 8000 7226 63 63 0.79% 0.87%
D 8000 7226 61 61 0.76% 0.84%

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 3 78 693937 3681.12 756 736 188.3
A 4 249 295796 1566.86 756 736 188.3
A 4 206 35779 186.09 756 736 188.3
B 2 249 157526 960.2 753 726 163.3
B 10 247 57801 349.51 753 726 163.3
B 0 182 20689 122.25 753 726 163.3
C 1 16 181363 884.46 739 734 204.2
C 10 22 142091 692.17 739 734 204.2
C 12 252 113047 549.95 739 734 204.2
D 11 129 290446 1399.34 731 700 207.1
D 2 249 268591 1293.79 731 700 207.1
D 11 176 170294 819.06 731 700 207.1

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