ASTROSAT CZTI

Data Quality Report

Orbit 00942

Creation date: 2024-06-27T14:05:04.607130
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_998T01_9000000188_00942cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00942cztM0_level2_quad_clean.evt
Size (bytes)1,128,081,60099,570,240
Size1.1 GB 95.0 MB
Events in quadrant A7,932,550659,483
Events in quadrant B7,901,278659,471
Events in quadrant C7,642,626648,374
Events in quadrant D10,271,566608,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280800
B0279410
C0271610
D0349980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298600.952683%
B629860.095268%
C6299160.254009%
D62993786.000953%

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 7473 6299 432 432 5.78% 6.86%
B 7473 6299 227 227 3.04% 3.60%
C 7474 6300 171 171 2.29% 2.71%
D 7474 6300 1505 1505 20.14% 23.89%

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 14 170 424351 923.94 1912 1920 457.2
A 13 147 165580 357.96 1912 1920 457.2
A 13 193 6834 10.75 1912 1920 457.2
B 0 220 105898 223.88 1995 2002 464.1
B 8 234 55636 115.57 1995 2002 464.1
B 4 232 28012 56.05 1995 2002 464.1
C 15 241 240295 470.37 1848 1916 506.8
C 9 144 104656 202.73 1848 1916 506.8
C 10 34 30428 56.26 1848 1916 506.8
D 12 188 2571208 4764.76 1762 1825 539.2
D 1 4 694420 1284.37 1762 1825 539.2
D 12 22 156414 286.68 1762 1825 539.2

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