ASTROSAT CZTI

Data Quality Report

Orbit 20160903_G05_218T04_9000000640_level2

Creation date: 2018-05-17T15:00:51.365764
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/AS1G05_218T04_9000000640cztM0_level2.evt modeM0/AS1G05_218T04_9000000640cztM0_level2_quad_clean.evt
Size (bytes)8,179,335,3601,163,001,600
Size7.6 GB 1.1 GB
Events in quadrant A53,831,1757,253,268
Events in quadrant B49,346,8757,360,154
Events in quadrant C52,052,3377,183,469
Events in quadrant D85,629,7536,455,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020740
B020740
C020740
D020640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300050
B02145800
C02242770
D03254770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10171131753.121590%
B10169115291.503575%
C10170811701.150352%
D1016491432414.091629%

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 151811 101971 1339 1339 0.88% 1.31%
B 151811 101971 53 53 0.03% 0.05%
C 151811 101975 21 21 0.01% 0.02%
D 151811 101943 11735 11735 7.73% 11.51%

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 13 251 3730479 1540.0 11926 11678 2414.8
A 0 247 1652580 679.52 11926 11678 2414.8
A 15 174 1044212 427.59 11926 11678 2414.8
B 15 204 1004260 431.91 12058 11782 2297.9
B 0 219 735382 314.9 12058 11782 2297.9
B 4 48 350232 147.29 12058 11782 2297.9
C 1 16 6675978 2497.26 11561 11620 2668.7
C 14 67 188723 66.36 11561 11620 2668.7
C 13 61 94186 30.94 11561 11620 2668.7
D 7 237 17698928 6651.14 10951 10639 2659.4
D 13 235 15120314 5681.53 10951 10639 2659.4
D 13 239 4181818 1568.44 10951 10639 2659.4

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