ASTROSAT CZTI

Data Quality Report

Orbit 06449

Creation date: 2024-06-27T15:07:21.924473
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/AS1A02_191T01_9000000854_06449cztM0_level2.evt modeM0/AS1A02_191T01_9000000854_06449cztM0_level2_quad_clean.evt
Size (bytes)1,182,646,080216,365,760
Size1.1 GB 206.3 MB
Events in quadrant A8,175,1791,334,575
Events in quadrant B8,618,4061,361,306
Events in quadrant C8,041,6811,325,407
Events in quadrant D9,740,1121,267,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371873
B0381352
C0371172
D0419632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183441220.665068%
B183441290.703227%
C18344770.419756%
D183442581.406454%

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 20284 18347 0 0 0.00% 0.00%
B 20284 18347 17 17 0.08% 0.09%
C 20284 18347 0 0 0.00% 0.00%
D 20284 18347 62 62 0.31% 0.34%

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 8 15 37232 82.37 2104 2054 427.1
A 10 133 25320 54.48 2104 2054 427.1
A 0 226 20016 42.06 2104 2054 427.1
B 0 228 200415 487.95 2119 2068 406.5
B 4 81 81869 196.32 2119 2068 406.5
B 15 204 50936 120.22 2119 2068 406.5
C 10 170 21647 41.4 2041 2048 473.5
C 8 128 18211 34.14 2041 2048 473.5
C 9 54 16893 31.35 2041 2048 473.5
D 2 63 1207827 2413.36 2037 1969 499.7
D 8 195 315113 626.71 2037 1969 499.7
D 2 136 194940 386.2 2037 1969 499.7

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