ASTROSAT CZTI

Data Quality Report

Orbit 05740

Creation date: 2024-06-27T14:58:33.473948
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/AS1A02_149T01_9000000740_05740cztM0_level2.evt modeM0/AS1A02_149T01_9000000740_05740cztM0_level2_quad_clean.evt
Size (bytes)1,217,393,280199,926,720
Size1.1 GB 190.7 MB
Events in quadrant A8,330,3921,196,381
Events in quadrant B9,438,6551,199,100
Events in quadrant C8,217,1411,221,173
Events in quadrant D9,625,5371,157,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03782
B03780
C03782
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03819457
B04039053
C03781839
D04156273

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18584960.516573%
B185861460.785538%
C18591480.258189%
D185811280.688876%

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 20524 18612 18 18 0.09% 0.10%
B 20524 18611 21 21 0.10% 0.11%
C 20524 18612 0 0 0.00% 0.00%
D 20524 18612 80 80 0.39% 0.43%

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 7 16 69463 154.01 2133 2082 437.5
A 15 236 23951 49.98 2133 2082 437.5
A 12 194 21051 43.36 2133 2082 437.5
B 15 204 538290 1296.78 2155 2102 413.5
B 11 51 183545 438.82 2155 2102 413.5
B 4 81 119540 284.03 2155 2102 413.5
C 14 67 20410 37.54 2092 2105 487.6
C 8 222 18118 32.84 2092 2105 487.6
C 13 61 16720 29.97 2092 2105 487.6
D 0 11 327423 637.85 2079 2012 510.2
D 1 20 290376 565.23 2079 2012 510.2
D 2 63 245564 477.39 2079 2012 510.2

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