ASTROSAT CZTI

Data Quality Report

Orbit 38224

Creation date: 2024-06-27T21:49:58.648618
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/AS1A07_145T01_9000005370_38224cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38224cztM0_level2_quad_clean.evt
Size (bytes)990,610,560250,309,440
Size944.7 MB 238.7 MB
Events in quadrant A7,967,3041,711,150
Events in quadrant B9,063,6921,724,078
Events in quadrant C7,883,0791,643,058
Events in quadrant D10,558,3181,434,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328374
B0372993
C0331703
D0416203

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15450430.278317%
B154503122.019417%
C154501240.802589%
D1545010806.990291%

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 19601 15453 14 14 0.07% 0.09%
B 19601 15453 251 251 1.28% 1.62%
C 19601 15453 102 102 0.52% 0.66%
D 19601 15452 959 959 4.89% 6.21%

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 934158 2695.49 1723 1686 345.9
A 12 189 132135 377.09 1723 1686 345.9
A 9 143 130299 371.78 1723 1686 345.9
B 0 183 2048315 6272.5 1707 1662 326.3
B 4 232 118013 356.59 1707 1662 326.3
B 5 172 68016 203.36 1707 1662 326.3
C 15 214 627659 1618.75 1674 1683 386.7
C 9 236 328960 846.32 1674 1683 386.7
C 3 9 226417 581.15 1674 1683 386.7
D 2 249 1909302 4869.16 1615 1572 391.8
D 12 227 1140095 2905.89 1615 1572 391.8
D 12 235 215621 546.32 1615 1572 391.8

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