ASTROSAT CZTI

Data Quality Report

Orbit 20160217_P01_175T02_9000000326_level2

Creation date: 2017-10-31T13:45:04.615350
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/AS1P01_175T02_9000000326cztM0_level2.evt modeM0/AS1P01_175T02_9000000326cztM0_level2_quad_clean.evt
Size (bytes)2,634,520,320672,998,400
Size2.5 GB 641.8 MB
Events in quadrant A21,205,5894,364,129
Events in quadrant B19,108,1834,471,148
Events in quadrant C18,320,0234,341,475
Events in quadrant D18,213,1694,225,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08700
B08700
C08700
D08700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B160
C160
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0969520
B0900010
C0899420
D0910850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4345611802.715390%
B434565221.201215%
C434564090.941182%
D434544561.049386%

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 49366 43464 740 740 1.50% 1.70%
B 49366 43464 24 24 0.05% 0.06%
C 49366 43464 36 36 0.07% 0.08%
D 49366 43463 113 113 0.23% 0.26%

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 0 199 3151549 3526.91 4601 4527 892.3
A 15 236 251698 277.01 4601 4527 892.3
A 0 128 87631 93.14 4601 4527 892.3
B 0 198 271650 314.97 4770 4672 847.6
B 5 68 189621 218.19 4770 4672 847.6
B 15 85 104652 117.95 4770 4672 847.6
C 10 82 476103 483.3 4513 4536 975.7
C 10 65 53701 50.39 4513 4536 975.7
C 5 234 36576 32.84 4513 4536 975.7
D 2 32 481609 485.0 4435 4335 984.1
D 7 85 227217 226.49 4435 4335 984.1
D 13 88 150237 148.26 4435 4335 984.1

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