ASTROSAT CZTI

Data Quality Report

Orbit 20161025_G06_052T01_9000000754_level2

Creation date: 2017-09-18T19:47:32.526847
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/AS1G06_052T01_9000000754cztM0_level2.evt modeM0/AS1G06_052T01_9000000754cztM0_level2_quad_clean.evt
Size (bytes)4,660,868,1601,092,954,240
Size4.3 GB 1.0 GB
Events in quadrant A35,391,0707,075,388
Events in quadrant B34,034,2967,221,800
Events in quadrant C31,792,6547,116,903
Events in quadrant D35,106,0126,788,707

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014600
B014540
C014540
D014580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570690
B01506840
C01476390
D01571760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7151419292.697374%
B715218361.168887%
C715046150.860092%
D7152810701.495918%

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 82218 71661 910 910 1.11% 1.27%
B 82218 71666 20 20 0.02% 0.03%
C 82218 71656 46 46 0.06% 0.06%
D 82218 71664 349 349 0.42% 0.49%

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 15 236 3374299 2034.96 8184 8008 1654.2
A 15 223 179965 103.95 8184 8008 1654.2
A 15 234 106407 59.48 8184 8008 1654.2
B 15 204 1238380 794.03 8291 8085 1549.4
B 0 214 215982 134.18 8291 8085 1549.4
B 0 219 206161 127.84 8291 8085 1549.4
C 1 16 464960 250.66 7995 8034 1822.9
C 13 61 64688 31.08 7995 8034 1822.9
C 14 67 61623 29.4 7995 8034 1822.9
D 2 152 1919640 989.99 7996 7751 1931.2
D 11 241 795847 408.08 7996 7751 1931.2
D 2 63 685280 350.83 7996 7751 1931.2

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