ASTROSAT CZTI

Data Quality Report

Orbit 20160224_T01_072T05_9000000344_level2

Creation date: 2017-10-27T02:42:58.052381
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_072T05_9000000344cztM0_level2.evt modeM0/AS1T01_072T05_9000000344cztM0_level2_quad_clean.evt
Size (bytes)7,525,704,9601,445,731,200
Size7.0 GB 1.3 GB
Events in quadrant A53,977,0138,798,807
Events in quadrant B56,393,6289,037,828
Events in quadrant C54,792,2118,940,550
Events in quadrant D54,556,6068,698,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024320
B024340
C024320
D024340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02490390
B02524170
C02497590
D02547790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B1150
C1150
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12129812131.000016%
B12135314771.217110%
C1213409560.787869%
D12134011170.920554%

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 157728 121373 3 3 0.00% 0.00%
B 157728 121433 31 31 0.02% 0.03%
C 157728 121414 22 22 0.01% 0.02%
D 157728 121427 216 216 0.14% 0.18%

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 12 194 160041 51.34 13970 13677 2851.1
A 0 226 151051 48.18 13970 13677 2851.1
A 15 47 94743 28.43 13970 13677 2851.1
B 4 48 524036 186.55 14335 13972 2734.2
B 15 85 234569 80.68 14335 13972 2734.2
B 12 111 200562 68.24 14335 13972 2734.2
C 5 234 240748 70.78 13766 13780 3206.8
C 1 192 167532 47.94 13766 13780 3206.8
C 8 112 160575 45.78 13766 13780 3206.8
D 10 172 1297082 394.77 13632 13277 3252.1
D 6 112 274374 80.29 13632 13277 3252.1
D 12 79 261657 76.38 13632 13277 3252.1

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