ASTROSAT CZTI

Data Quality Report

Orbit 28720

Creation date: 2024-06-27T19:55:22.684956
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/AS1A10_123T06_9000004122_28720cztM0_level2.evt modeM0/AS1A10_123T06_9000004122_28720cztM0_level2_quad_clean.evt
Size (bytes)512,213,76079,750,080
Size488.5 MB 76.1 MB
Events in quadrant A3,365,466501,643
Events in quadrant B3,649,941500,584
Events in quadrant C3,509,051482,979
Events in quadrant D4,546,202475,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136471
B0145221
C0140051
D0177362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6513731.120835%
B65141622.486951%
C65141251.918944%
D65131842.825119%

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 7688 6513 0 0 0.00% 0.00%
B 7689 6514 78 78 1.01% 1.20%
C 7689 6514 0 0 0.00% 0.00%
D 7688 6514 145 145 1.89% 2.23%

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 12 96 11912 64.53 865 852 171.4
A 13 254 11154 60.11 865 852 171.4
A 15 174 10235 54.74 865 852 171.4
B 10 247 172920 1094.76 841 823 157.2
B 10 245 161515 1022.21 841 823 157.2
B 12 111 18983 115.52 841 823 157.2
C 3 233 172676 918.19 814 820 187.2
C 14 238 145308 771.97 814 820 187.2
C 14 254 18338 93.59 814 820 187.2
D 1 52 808774 4134.82 828 808 195.4
D 8 195 308789 1576.11 828 808 195.4
D 12 233 188760 961.86 828 808 195.4

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