ASTROSAT CZTI

Data Quality Report

Orbit 20160511_G05_112T01_9000000452_level2

Creation date: 2018-05-17T07:49:02.180895
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/AS1G05_112T01_9000000452cztM0_level2.evt modeM0/AS1G05_112T01_9000000452cztM0_level2_quad_clean.evt
Size (bytes)12,379,049,2802,276,046,720
Size11.5 GB 2.1 GB
Events in quadrant A86,550,56314,237,791
Events in quadrant B99,741,72314,332,923
Events in quadrant C90,737,84714,200,125
Events in quadrant D85,516,32513,625,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03846160
B04173030
C03967350
D03899230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037240
B037240
C037240
D037240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03030
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18313028561.559548%
B18313037192.030798%
C18312925011.365704%
D18312830081.642567%

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 255007 183170 232 232 0.09% 0.13%
B 255007 183170 503 503 0.20% 0.27%
C 255007 183170 593 593 0.23% 0.32%
D 255007 183168 1037 1037 0.41% 0.57%

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 0 118 1133796 255.68 21426 20954 4352.6
A 14 249 796339 178.14 21426 20954 4352.6
A 0 31 721065 160.85 21426 20954 4352.6
B 15 204 7352631 1764.78 21706 21207 4154.3
B 14 167 2415817 576.42 21706 21207 4154.3
B 4 170 2313393 551.76 21706 21207 4154.3
C 1 192 3152361 643.13 20965 21106 4868.8
C 9 144 2223322 452.31 20965 21106 4868.8
C 14 223 1128716 227.49 20965 21106 4868.8
D 13 223 3745572 742.87 20826 20236 5014.8
D 12 79 561449 107.92 20826 20236 5014.8
D 5 233 510132 97.69 20826 20236 5014.8

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