ASTROSAT CZTI

Data Quality Report

Orbit 20200207_A07_024T04_9000003484_level2

Creation date: 2020-02-10T11:24:39.329472
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_024T04_9000003484cztM0_level2_bc.evt modeM0/AS1A07_024T04_9000003484cztM0_level2_quad_clean.evt
Size (bytes)458,907,840115,441,920
Size437.6 MB 110.1 MB
Events in quadrant A2,518,663701,421
Events in quadrant B2,952,288704,348
Events in quadrant C2,336,560686,395
Events in quadrant D5,361,078669,138

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230370
B0247600
C0227460
D0326570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10604870.820445%
B106022852.688172%
C106041441.357978%
D106037947.488447%

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 11579 10603 2 2 0.02% 0.02%
B 11579 10602 29 29 0.25% 0.27%
C 11579 10602 0 0 0.00% 0.00%
D 11579 10602 41 41 0.35% 0.39%

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 15 174 358434 2976.99 533 521 120.2
A 6 16 95663 791.36 533 521 120.2
A 13 254 17168 138.46 533 521 120.2
B 3 64 706736 6730.21 532 516 104.9
B 0 189 73337 693.98 532 516 104.9
B 0 245 39474 371.27 532 516 104.9
C 10 9 302305 2463.18 514 509 122.5
C 7 247 43805 353.37 514 509 122.5
C 3 233 5173 38.07 514 509 122.5
D 7 223 1521855 12414.74 514 493 122.5
D 1 52 1062371 8665.22 514 493 122.5
D 9 85 211504 1721.91 514 493 122.5

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