ASTROSAT CZTI

Data Quality Report

Orbit 20160228_T01_058T01_9000000348_level2

Creation date: 2016-09-06T17:53:12.978990
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_058T01_9000000348cztM0_level2_bc.evt modeM0/AS1T01_058T01_9000000348cztM0_level2_quad_clean.evt
Size (bytes)4,066,603,2001,080,092,160
Size3.8 GB 1.0 GB
Events in quadrant A20,903,4376,532,746
Events in quadrant B23,003,6086,610,329
Events in quadrant C43,946,7616,689,134
Events in quadrant D29,143,5056,674,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01849960
B01931130
C02567070
D02106780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018240
B018230
C018210
D018480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B1600
C1600
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A905376750.745552%
B9050616191.788832%
C9134484259.223375%
D8983522382.491234%

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 149845 91785 0 0 0.00% 0.00%
B 149845 91387 6 6 0.00% 0.01%
C 149844 92272 4313 4313 2.88% 4.67%
D 149845 90578 520 520 0.35% 0.57%

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 33 132055 119.12 5387 5276 1064.3
A 12 194 57370 48.95 5387 5276 1064.3
A 0 226 51902 43.81 5387 5276 1064.3
B 4 48 1659302 1798.35 5426 5274 919.7
B 3 0 151144 158.6 5426 5274 919.7
B 15 85 99895 102.88 5426 5274 919.7
C 2 53 18821513 16845.49 5262 5225 1117.0
C 5 234 3560257 3182.68 5262 5225 1117.0
C 14 223 503726 446.29 5262 5225 1117.0
D 12 126 4707747 4093.08 5241 5104 1148.9
D 9 66 3825145 3324.88 5241 5104 1148.9
D 13 169 188012 159.2 5241 5104 1148.9

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
Veto Counter