ASTROSAT CZTI

Data Quality Report

Orbit 28779

Creation date: 2024-06-27T19:56:13.088904
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/AS1C05_019T04_9000004130_28779cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28779cztM0_level2_quad_clean.evt
Size (bytes)645,390,720103,734,720
Size615.5 MB 98.9 MB
Events in quadrant A2,954,853708,217
Events in quadrant B2,948,163719,734
Events in quadrant C8,015,144635,967
Events in quadrant D5,202,826638,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128272
B0128032
C0282792
D0196212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280931.480892%
B6281871.385130%
C6281104416.621557%
D628163610.125776%

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 7020 6281 0 0 0.00% 0.00%
B 7021 6281 0 0 0.00% 0.00%
C 7021 6282 404 404 5.75% 6.43%
D 7021 6282 462 462 6.58% 7.35%

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 15 174 16009 99.75 759 743 153.0
A 13 254 10586 64.32 759 743 153.0
A 3 137 7261 42.59 759 743 153.0
B 12 111 17129 114.86 747 728 142.8
B 11 111 15926 106.44 747 728 142.8
B 14 111 14431 95.97 747 728 142.8
C 3 233 5131446 32513.86 687 689 157.8
C 14 238 124265 783.11 687 689 157.8
C 4 254 34700 215.53 687 689 157.8
D 1 52 1840272 11001.08 703 683 167.2
D 8 195 629072 3757.88 703 683 167.2
D 7 238 32115 187.97 703 683 167.2

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