ASTROSAT CZTI

Data Quality Report

Orbit 20170422_G07_007T01_9000001196_level2

Creation date: 2017-09-23T19:35:40.229134
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/AS1G07_007T01_9000001196cztM0_level2.evt modeM0/AS1G07_007T01_9000001196cztM0_level2_quad_clean.evt
Size (bytes)3,853,270,080607,438,080
Size3.6 GB 579.3 MB
Events in quadrant A33,572,3913,714,170
Events in quadrant B27,116,5213,823,337
Events in quadrant C23,524,1913,750,080
Events in quadrant D29,042,2003,608,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01338300
B01126660
C01052930
D01219030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010380
B010380
C010380
D010380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5102237497.347811%
B5102212932.534201%
C510226021.179883%
D5102116443.222203%

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 57633 51028 2200 2200 3.82% 4.31%
B 57633 51027 176 176 0.31% 0.34%
C 57633 51032 1 1 0.00% 0.00%
D 57633 51030 627 627 1.09% 1.23%

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 5 16 9161253 7394.76 6108 5985 1238.1
A 15 236 685081 548.51 6108 5985 1238.1
A 13 251 69898 51.62 6108 5985 1238.1
B 11 51 720275 605.67 6235 6090 1179.2
B 0 214 642161 539.42 6235 6090 1179.2
B 5 255 604378 507.38 6235 6090 1179.2
C 13 61 46241 28.7 6024 6053 1400.2
C 8 222 36416 21.68 6024 6053 1400.2
C 3 202 15040 6.42 6024 6053 1400.2
D 1 52 2957405 1905.78 5971 5829 1548.7
D 12 233 1233049 792.4 5971 5829 1548.7
D 12 221 979959 628.98 5971 5829 1548.7

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