ASTROSAT CZTI

Data Quality Report

Orbit 46241

Creation date: 2024-06-27T23:20:43.185235
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_065T07_9000006188_46241cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46241cztM0_level2_quad_clean.evt
Size (bytes)462,818,880102,997,440
Size441.4 MB 98.2 MB
Events in quadrant A5,643,465690,712
Events in quadrant B3,530,936718,875
Events in quadrant C3,034,944681,903
Events in quadrant D4,441,296594,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204931
B0144051
C0134671
D0174291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61991762.839168%
B6200751.209677%
C62001041.677419%
D62005178.338710%

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 7294 6199 20 20 0.27% 0.32%
B 7295 6200 20 20 0.27% 0.32%
C 7295 6200 46 46 0.63% 0.74%
D 7295 6200 517 517 7.09% 8.34%

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 2862844 19574.6 708 694 146.2
A 0 247 18104 119.07 708 694 146.2
A 13 254 10415 66.48 708 694 146.2
B 3 112 620438 4419.24 703 680 140.2
B 5 171 59977 422.82 703 680 140.2
B 8 234 18004 123.53 703 680 140.2
C 1 3 153539 942.56 684 687 162.2
C 3 9 95354 583.76 684 687 162.2
C 12 2 93700 573.56 684 687 162.2
D 5 33 1013416 5888.06 676 655 172.0
D 2 249 563985 3275.13 676 655 172.0
D 1 52 85214 491.61 676 655 172.0

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