ASTROSAT CZTI

Data Quality Report

Orbit 20181120_A05_206T01_9000002528_level2

Creation date: 2018-11-22T18:13:30.917115
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/AS1A05_206T01_9000002528cztM0_level2_bc.evt modeM0/AS1A05_206T01_9000002528cztM0_level2_quad_clean.evt
Size (bytes)3,093,549,1201,369,728,000
Size2.9 GB 1.3 GB
Events in quadrant A20,785,4118,942,785
Events in quadrant B23,254,2709,120,532
Events in quadrant C18,459,3368,870,299
Events in quadrant D25,343,3608,675,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01902080
B01982560
C01802310
D02007160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017440
B017440
C017440
D017440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8579225232.940834%
B8579228683.342969%
C8579216681.944237%
D8579222702.645934%

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 97432 85795 269 269 0.28% 0.31%
B 97432 85793 202 202 0.21% 0.24%
C 97432 85790 1 1 0.00% 0.00%
D 97432 85793 333 333 0.34% 0.39%

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 15 174 3634751 3815.39 4359 4273 951.5
A 12 189 244024 251.96 4359 4273 951.5
A 4 2 158006 161.56 4359 4273 951.5
B 3 64 1991972 2402.46 4430 4320 827.3
B 7 220 1189312 1432.29 4430 4320 827.3
B 0 219 477315 571.71 4430 4320 827.3
C 3 233 1646917 1624.34 4312 4292 1011.3
C 7 247 88389 83.16 4312 4292 1011.3
C 0 207 43362 38.64 4312 4292 1011.3
D 1 52 6156528 5902.59 4385 4226 1042.3
D 15 0 628863 599.28 4385 4226 1042.3
D 5 222 534219 508.48 4385 4226 1042.3

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