ASTROSAT CZTI

Data Quality Report

Orbit 46185

Creation date: 2024-06-27T23:20:06.914452
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_093T40_9000006182_46185cztM0_level2.fits modeM0/AS1A13_093T40_9000006182_46185cztM0_level2_quad_clean.evt
Size (bytes)501,796,800110,082,240
Size478.6 MB 105.0 MB
Events in quadrant A6,092,840739,561
Events in quadrant B3,932,725774,840
Events in quadrant C2,934,345731,217
Events in quadrant D5,127,412648,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222184
B0158622
C0131702
D0195942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62892974.722531%
B62891372.178407%
C6289340.540626%
D62893515.581173%

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 7504 6290 79 79 1.05% 1.26%
B 7504 6290 47 47 0.63% 0.75%
C 7504 6290 7 7 0.09% 0.11%
D 7504 6290 291 291 3.88% 4.63%

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 3126419 21001.97 729 715 148.8
A 9 191 62624 415.97 729 715 148.8
A 0 247 54834 363.63 729 715 148.8
B 3 112 747864 5370.75 731 711 139.1
B 5 172 158183 1131.95 731 711 139.1
B 5 32 47916 339.32 731 711 139.1
C 12 2 85902 519.97 706 710 163.8
C 14 254 49865 300.02 706 710 163.8
C 10 218 16458 96.12 706 710 163.8
D 1 52 1218629 6939.48 696 672 175.5
D 2 37 438292 2493.4 696 672 175.5
D 2 249 326556 1856.77 696 672 175.5

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