ASTROSAT CZTI

Data Quality Report

Orbit 20180809_G08_043T01_9000002288_level2

Creation date: 2018-08-16T18:07:45.276632
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/AS1G08_043T01_9000002288cztM0_level2_bc.evt modeM0/AS1G08_043T01_9000002288cztM0_level2_quad_clean.evt
Size (bytes)963,829,440482,287,680
Size919.2 MB 459.9 MB
Events in quadrant A5,957,2103,281,910
Events in quadrant B7,192,9943,281,342
Events in quadrant C5,906,8713,183,894
Events in quadrant D8,393,2073,111,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05180
B05180
C05180
D05180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0542990
B0583680
C0549920
D0622560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254553611.418189%
B254554521.775683%
C254554761.869967%
D254558103.182086%

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 31666 25454 2 2 0.01% 0.01%
B 31666 25453 11 11 0.03% 0.04%
C 31666 25454 2 2 0.01% 0.01%
D 31666 25453 134 134 0.42% 0.53%

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 0 253 106169 326.81 1495 1476 320.4
A 9 143 46120 139.36 1495 1476 320.4
A 13 248 21767 63.34 1495 1476 320.4
B 10 245 568910 2073.86 1487 1461 273.6
B 4 142 175508 636.09 1487 1461 273.6
B 0 229 167579 607.11 1487 1461 273.6
C 3 233 351321 1050.85 1430 1431 333.0
C 9 54 31240 89.53 1430 1431 333.0
C 10 22 19870 55.38 1430 1431 333.0
D 1 52 1052484 3136.88 1463 1421 335.1
D 5 222 972642 2898.59 1463 1421 335.1
D 7 38 332949 989.44 1463 1421 335.1

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