ASTROSAT CZTI

Data Quality Report

Orbit 42995

Creation date: 2024-06-27T22:46:40.939364
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_148T01_9000005838_42995cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42995cztM0_level2_quad_clean.evt
Size (bytes)420,298,560121,446,720
Size400.8 MB 115.8 MB
Events in quadrant A3,518,707890,017
Events in quadrant B3,234,508889,209
Events in quadrant C4,686,018786,056
Events in quadrant D3,710,442745,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140742
B0129782
C0173172
D0145074

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5257621.179380%
B5257621.179380%
C525753310.138862%
D52562364.490107%

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 7290 5258 36 36 0.49% 0.68%
B 7290 5258 25 25 0.34% 0.48%
C 7290 5258 510 510 7.00% 9.70%
D 7289 5256 210 210 2.88% 4.00%

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 607641 3764.31 707 693 161.2
A 15 237 139203 859.04 707 693 161.2
A 13 6 14727 87.04 707 693 161.2
B 4 171 283208 1894.05 694 679 149.2
B 5 255 105811 704.8 694 679 149.2
B 15 85 70978 471.28 694 679 149.2
C 5 250 1936998 11793.9 630 633 164.2
C 15 214 202057 1226.82 630 633 164.2
C 5 233 38912 233.15 630 633 164.2
D 10 118 340976 1897.24 665 642 179.4
D 1 47 193588 1075.61 665 642 179.4
D 1 52 187191 1039.95 665 642 179.4

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