ASTROSAT CZTI

Data Quality Report

Orbit 37578

Creation date: 2024-06-27T21:41:46.462131
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/AS1T05_053T01_9000005338_37578cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37578cztM0_level2_quad_clean.evt
Size (bytes)403,424,64064,946,880
Size384.7 MB 61.9 MB
Events in quadrant A2,744,194413,554
Events in quadrant B3,041,752417,012
Events in quadrant C2,593,731411,573
Events in quadrant D3,501,933377,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112103
B0120672
C0105692
D0137672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4950190.383838%
B49501252.525253%
C4950340.686869%
D49502384.808081%

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 7014 4951 13 13 0.19% 0.26%
B 7014 4951 117 117 1.67% 2.36%
C 7014 4951 40 40 0.57% 0.81%
D 7014 4951 223 223 3.18% 4.50%

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 10 83 307548 2577.84 587 576 119.1
A 15 222 100476 838.92 587 576 119.1
A 9 143 25668 210.71 587 576 119.1
B 5 255 157742 1429.35 587 573 110.0
B 5 200 117852 1066.57 587 573 110.0
B 4 171 103681 937.7 587 573 110.0
C 15 214 214357 1624.15 565 569 131.6
C 0 10 133979 1013.52 565 569 131.6
C 14 254 30693 228.85 565 569 131.6
D 2 249 451089 3338.09 547 529 135.0
D 10 253 204192 1508.89 547 529 135.0
D 2 250 182476 1348.0 547 529 135.0

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