ASTROSAT CZTI

Data Quality Report

Orbit 20180304_A04_094T01_9000001942_level2

Creation date: 2018-07-06T11:18:02.210839
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/AS1A04_094T01_9000001942cztM0_level2_bc.evt modeM0/AS1A04_094T01_9000001942cztM0_level2_quad_clean.evt
Size (bytes)3,694,898,8801,304,625,600
Size3.4 GB 1.2 GB
Events in quadrant A23,175,0298,212,827
Events in quadrant B31,991,9658,187,442
Events in quadrant C19,405,1808,427,447
Events in quadrant D30,583,9047,904,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020160
B020160
C020160
D020160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02122430
B02566280
C02033380
D02413760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9897013761.390320%
B9897276747.753708%
C989789931.003253%
D9896939303.970940%

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 115330 98984 32 32 0.03% 0.03%
B 115330 98816 1125 1125 0.98% 1.14%
C 115330 98982 3 3 0.00% 0.00%
D 115330 98973 621 621 0.54% 0.63%

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 12 189 1901154 1772.6 4925 4830 1069.8
A 0 23 1134048 1055.54 4925 4830 1069.8
A 8 192 311629 286.78 4925 4830 1069.8
B 4 239 9991516 11057.56 4810 4678 903.2
B 3 64 1691119 1867.25 4810 4678 903.2
B 4 80 344350 376.09 4810 4678 903.2
C 15 208 120838 108.2 4902 4836 1072.1
C 14 234 47581 39.87 4902 4836 1072.1
C 0 207 34117 27.31 4902 4836 1072.1
D 1 52 7679897 6920.95 4819 4648 1109.0
D 8 195 1442540 1296.58 4819 4648 1109.0
D 10 157 1342064 1205.98 4819 4648 1109.0

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