ASTROSAT CZTI

Data Quality Report

Orbit 00166

Creation date: 2024-06-27T13:57:18.057121
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/AS1P01_120T01_9000000006_00166cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00166cztM0_level2_quad_clean.evt
Size (bytes)884,779,20020,194,560
Size843.8 MB 19.3 MB
Events in quadrant A7,162,26557,197
Events in quadrant B6,762,04458,965
Events in quadrant C6,219,84158,613
Events in quadrant D6,292,69157,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250892
B0239251
C0223441
D0225351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5406561.035886%
B5406170.314465%
C540640.073992%
D5406400.739919%

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 6997 5408 343 343 4.90% 6.34%
B 6997 5408 161 161 2.30% 2.98%
C 6997 5408 61 61 0.87% 1.13%
D 6997 5408 122 122 1.74% 2.26%

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 14 10 396963 1046.31 1709 1695 377.8
A 0 96 64844 167.16 1709 1695 377.8
A 14 170 31621 79.22 1709 1695 377.8
B 10 199 297004 746.16 1664 1675 395.8
B 5 216 55039 134.82 1664 1675 395.8
B 0 212 12712 27.88 1664 1675 395.8
C 8 31 141978 326.05 1524 1580 430.6
C 0 202 37819 84.16 1524 1580 430.6
C 10 17 19159 40.82 1524 1580 430.6
D 13 223 108687 226.07 1547 1599 473.7
D 2 63 51574 105.5 1547 1599 473.7
D 1 2 36330 73.32 1547 1599 473.7

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