ASTROSAT CZTI

Data Quality Report

Orbit 20161212_G06_091T01_9000000880_level2

Creation date: 2017-09-21T13:11:04.065371
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_091T01_9000000880cztM0_level2.evt modeM0/AS1G06_091T01_9000000880cztM0_level2_quad_clean.evt
Size (bytes)4,639,711,6801,007,524,800
Size4.3 GB 960.9 MB
Events in quadrant A36,348,6586,489,696
Events in quadrant B34,391,2956,626,499
Events in quadrant C29,497,7286,605,545
Events in quadrant D35,800,3106,248,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013480
B013460
C013520
D013540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01534410
B01474370
C01357150
D01536300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01090
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629521823.291349%
B6630718692.818707%
C663417681.157655%
D6628420863.147064%

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 77612 66773 712 712 0.92% 1.07%
B 77612 66763 503 503 0.65% 0.75%
C 77612 66774 3 3 0.00% 0.00%
D 77612 66765 889 889 1.15% 1.33%

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 5254779 3453.29 7556 7401 1519.5
A 13 251 881517 575.25 7556 7401 1519.5
A 8 15 626014 407.11 7556 7401 1519.5
B 4 170 1210746 840.83 7686 7503 1431.0
B 4 48 995710 690.56 7686 7503 1431.0
B 0 219 747149 516.87 7686 7503 1431.0
C 1 16 67060 34.41 7528 7553 1729.3
C 13 61 59618 30.11 7528 7553 1729.3
C 8 128 33336 14.91 7528 7553 1729.3
D 2 33 3179557 1753.65 7432 7204 1809.0
D 2 152 1307213 718.63 7432 7204 1809.0
D 2 63 840116 460.43 7432 7204 1809.0

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