ASTROSAT CZTI

Data Quality Report

Orbit 50619

Creation date: 2025-02-05T23:02:39.354063
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_239T01_9000006444_50619cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50619cztM0_level2_quad_clean.evt
Size (bytes)591,275,52082,437,120
Size563.9 MB 78.6 MB
Events in quadrant A3,945,862565,105
Events in quadrant B8,463,493467,732
Events in quadrant C4,622,538519,433
Events in quadrant D4,373,109509,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160721
B0294271
C0181125
D0173851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62162664.279279%
B6216186229.954955%
C62155188.334674%
D62162403.861004%

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 7066 6216 215 215 3.04% 3.46%
B 7066 6216 1661 1661 23.51% 26.72%
C 7064 6214 373 373 5.28% 6.00%
D 7066 6216 212 212 3.00% 3.41%

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 6 161 275072 1706.56 644 627 160.8
A 8 247 216822 1344.35 644 627 160.8
A 3 130 164689 1020.17 644 627 160.8
B 3 249 3019424 24775.02 573 554 121.9
B 4 170 2164427 17758.3 573 554 121.9
B 2 176 470210 3854.34 573 554 121.9
C 15 158 584206 3386.21 619 613 172.3
C 15 174 374911 2171.8 619 613 172.3
C 15 147 198040 1145.54 619 613 172.3
D 2 165 776905 4474.48 627 605 173.5
D 2 249 148122 850.27 627 605 173.5
D 7 77 137142 786.98 627 605 173.5

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