ASTROSAT CZTI

Data Quality Report

Orbit 20160616_G05_239T02_9000000496_level2

Creation date: 2016-09-06T17:49:22.824312
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_239T02_9000000496cztM0_level2_bc.evt modeM0/AS1G05_239T02_9000000496cztM0_level2_quad_clean.evt
Size (bytes)2,584,284,480527,880,960
Size2.4 GB 503.4 MB
Events in quadrant A16,598,8583,136,038
Events in quadrant B13,842,0003,202,288
Events in quadrant C29,427,6112,938,753
Events in quadrant D14,727,2383,008,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010960
B010960
C010960
D010960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01338580
B01206680
C01838090
D01254420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5392921513.988578%
B539296871.273897%
C5392951079.469859%
D5392913172.442100%

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 63728 53920 108 108 0.17% 0.20%
B 63729 53923 18 18 0.03% 0.03%
C 63729 53919 81 81 0.13% 0.15%
D 63728 53922 223 223 0.35% 0.41%

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 8 15 1874058 3242.72 2598 2539 577.1
A 0 199 1249934 2161.32 2598 2539 577.1
A 0 118 1176469 2034.03 2598 2539 577.1
B 15 204 2010635 3941.69 2665 2586 509.4
B 7 221 654468 1279.61 2665 2586 509.4
B 4 170 206347 399.97 2665 2586 509.4
C 2 53 19405566 35466.18 2450 2409 547.1
C 12 4 104875 187.29 2450 2409 547.1
C 7 222 103672 185.09 2450 2409 547.1
D 9 82 1002720 1652.92 2569 2467 605.1
D 1 20 745293 1227.52 2569 2467 605.1
D 13 25 557661 917.46 2569 2467 605.1

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