ASTROSAT CZTI

Data Quality Report

Orbit 44187

Creation date: 2024-06-27T23:00:10.661019
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/AS1A13_074T04_9000005962_44187cztM0_level2.fits modeM0/AS1A13_074T04_9000005962_44187cztM0_level2_quad_clean.evt
Size (bytes)470,332,800116,337,600
Size448.5 MB 110.9 MB
Events in quadrant A5,720,803772,395
Events in quadrant B3,688,096805,582
Events in quadrant C3,376,502758,137
Events in quadrant D4,073,398692,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221852
B0159142
C0151022
D0173232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71022243.154041%
B7102951.337651%
C7101460.647796%
D71011562.196874%

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 7732 7103 124 124 1.60% 1.75%
B 7732 7103 22 22 0.28% 0.31%
C 7731 7102 19 19 0.25% 0.27%
D 7731 7102 133 133 1.72% 1.87%

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 1462921 8908.57 793 776 164.1
A 15 223 1090110 6637.11 793 776 164.1
A 7 3 63021 379.25 793 776 164.1
B 4 170 125647 786.34 797 771 158.8
B 0 189 96184 600.81 797 771 158.8
B 5 172 88214 550.62 797 771 158.8
C 14 254 191683 1026.91 781 785 185.9
C 9 54 47299 250.21 781 785 185.9
C 3 233 43378 229.12 781 785 185.9
D 2 249 600477 3074.01 774 751 195.1
D 13 249 221536 1131.67 774 751 195.1
D 1 52 76330 387.39 774 751 195.1

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