ASTROSAT CZTI

Data Quality Report

Orbit 20160323_T01_055T01_9000000394_level2

Creation date: 2017-10-27T00:42:52.155038
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/AS1T01_055T01_9000000394cztM0_level2.evt modeM0/AS1T01_055T01_9000000394cztM0_level2_quad_clean.evt
Size (bytes)3,297,841,920556,931,520
Size3.1 GB 531.1 MB
Events in quadrant A21,699,7033,433,932
Events in quadrant B22,341,5703,471,171
Events in quadrant C21,958,0113,436,087
Events in quadrant D30,661,4543,258,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09720
B09720
C09720
D09720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0984360
B0992770
C0993900
D01233750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A476229231.938180%
B476229542.003276%
C476225811.220024%
D4762215973.353492%

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 52133 47633 2 2 0.00% 0.00%
B 52133 47633 15 15 0.03% 0.03%
C 52133 47633 43 43 0.08% 0.09%
D 52133 47633 859 859 1.65% 1.80%

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 98756 81.34 5601 5469 1146.8
A 12 194 63201 50.34 5601 5469 1146.8
A 0 226 60245 47.76 5601 5469 1146.8
B 14 167 97909 84.77 5681 5537 1089.7
B 15 85 86521 74.32 5681 5537 1089.7
B 12 111 78134 66.62 5681 5537 1089.7
C 14 223 213030 163.27 5438 5461 1271.3
C 9 70 173631 132.28 5438 5461 1271.3
C 12 4 110174 82.37 5438 5461 1271.3
D 2 255 4690001 3644.68 5365 5231 1285.4
D 5 172 1146611 887.97 5365 5231 1285.4
D 2 184 813491 628.81 5365 5231 1285.4

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