ASTROSAT CZTI

Data Quality Report

Orbit 20170201_G06_137T01_9000001000_level2

Creation date: 2017-09-23T00:46:54.236522
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_137T01_9000001000cztM0_level2.evt modeM0/AS1G06_137T01_9000001000cztM0_level2_quad_clean.evt
Size (bytes)2,131,536,960410,509,440
Size2.0 GB 391.5 MB
Events in quadrant A16,532,8252,513,203
Events in quadrant B15,132,1032,657,329
Events in quadrant C15,215,9192,606,205
Events in quadrant D15,531,9542,479,658

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06440
B06440
C06440
D06420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706230
B0666790
C0672840
D0696560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A316957672.419940%
B316883541.117142%
C316982610.823396%
D316934081.287351%

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 41084 31723 427 427 1.04% 1.35%
B 41084 31723 14 14 0.03% 0.04%
C 41084 31730 92 92 0.22% 0.29%
D 41084 31730 176 176 0.43% 0.55%

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 15 234 1233276 1651.19 3692 3614 744.7
A 8 15 965333 1291.39 3692 3614 744.7
A 15 239 81005 103.92 3692 3614 744.7
B 0 214 286322 397.01 3792 3710 711.8
B 4 81 121044 164.83 3792 3710 711.8
B 12 111 74003 98.75 3792 3710 711.8
C 9 68 689379 814.48 3652 3669 841.9
C 1 16 186569 217.25 3652 3669 841.9
C 7 247 82338 93.44 3652 3669 841.9
D 2 14 729824 813.48 3645 3536 892.8
D 2 216 417940 464.16 3645 3536 892.8
D 14 34 182314 200.24 3645 3536 892.8

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