ASTROSAT CZTI

Data Quality Report

Orbit 20191121_T03_159T01_9000003328_level2

Creation date: 2019-11-22T12:05:23.728851
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/AS1T03_159T01_9000003328cztM0_level2_bc.evt modeM0/AS1T03_159T01_9000003328cztM0_level2_quad_clean.evt
Size (bytes)1,483,352,640691,231,680
Size1.4 GB 659.2 MB
Events in quadrant A9,970,1304,510,960
Events in quadrant B10,721,2014,623,047
Events in quadrant C9,407,0314,343,685
Events in quadrant D11,640,0494,257,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09520
B09520
C09520
D09520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0975320
B01000460
C0971920
D01017970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A466486071.301235%
B466487731.657091%
C466488441.809295%
D466486471.386983%

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 59201 46643 0 0 0.00% 0.00%
B 59201 46645 17 17 0.03% 0.04%
C 59201 46644 0 0 0.00% 0.00%
D 59201 46646 44 44 0.07% 0.09%

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 3 1 128581 232.72 2497 2454 542.0
A 6 240 97138 174.7 2497 2454 542.0
A 15 174 84609 151.59 2497 2454 542.0
B 0 244 448544 931.66 2541 2478 478.8
B 6 36 279887 579.4 2541 2478 478.8
B 4 173 75135 151.75 2541 2478 478.8
C 1 16 54385 91.87 2410 2401 565.8
C 0 10 39475 65.52 2410 2401 565.8
C 9 54 18431 28.33 2410 2401 565.8
D 1 52 916476 1625.26 2446 2362 562.4
D 7 223 641838 1136.97 2446 2362 562.4
D 2 234 192704 338.42 2446 2362 562.4

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