ASTROSAT CZTI

Data Quality Report

Orbit 20180404_A04_012T01_9000002012_level2

Creation date: 2018-04-05T10:14:52.796307
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/AS1A04_012T01_9000002012cztM0_level2_bc.evt modeM0/AS1A04_012T01_9000002012cztM0_level2_quad_clean.evt
Size (bytes)740,162,880238,250,880
Size705.9 MB 227.2 MB
Events in quadrant A4,050,4791,480,779
Events in quadrant B4,925,4051,469,986
Events in quadrant C4,477,3981,462,832
Events in quadrant D7,541,2781,371,706

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428650
B0459330
C0429740
D0535920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207681820.876348%
B207683331.603428%
C207681350.650039%
D207687983.842450%

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 23054 20771 0 0 0.00% 0.00%
B 23054 20769 42 42 0.18% 0.20%
C 23054 20770 1 1 0.00% 0.00%
D 23054 20769 45 45 0.20% 0.22%

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 69 44291 188.79 1031 1006 229.3
A 1 162 37792 160.44 1031 1006 229.3
A 0 226 7135 26.73 1031 1006 229.3
B 0 219 439408 2179.12 1024 991 201.2
B 3 64 200488 991.58 1024 991 201.2
B 10 244 75468 370.18 1024 991 201.2
C 3 233 465530 2059.65 1007 991 225.5
C 14 234 39155 169.21 1007 991 225.5
C 0 207 14160 58.39 1007 991 225.5
D 5 222 2421440 9954.2 1008 966 243.2
D 8 195 871723 3580.99 1008 966 243.2
D 13 249 177812 727.28 1008 966 243.2

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