ASTROSAT CZTI

Data Quality Report

Orbit 20201124_A10_048T06_9000004030_level2

Creation date: 2021-01-07T07:32:31.408162
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/AS1A10_048T06_9000004030cztM0_level2_bc.evt modeM0/AS1A10_048T06_9000004030cztM0_level2_quad_clean.evt
Size (bytes)4,815,887,0401,446,497,280
Size4.5 GB 1.3 GB
Events in quadrant A23,702,6649,528,217
Events in quadrant B28,019,6309,575,866
Events in quadrant C23,372,1639,054,219
Events in quadrant D63,393,8148,237,656

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02279890
B02431390
C02297340
D03785710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021960
B021960
C021960
D021960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10822311391.052457%
B10822316891.560666%
C10822319501.801835%
D1082231280211.829278%

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 122269 108215 135 135 0.11% 0.12%
B 122269 108211 21 21 0.02% 0.02%
C 122269 108212 8 8 0.01% 0.01%
D 122268 108152 2868 2868 2.35% 2.65%

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 6 16 866815 679.56 5872 5771 1267.1
A 13 254 169874 129.51 5872 5771 1267.1
A 8 192 86886 64.02 5872 5771 1267.1
B 10 245 3010331 2695.3 5901 5760 1114.7
B 0 230 793956 707.06 5901 5760 1114.7
B 15 32 623536 554.19 5901 5760 1114.7
C 3 233 1265453 971.17 5545 5523 1297.3
C 15 208 281546 212.76 5545 5523 1297.3
C 2 16 236054 177.7 5545 5523 1297.3
D 1 52 25680427 20593.33 5365 5182 1246.8
D 8 195 12433312 9968.22 5365 5182 1246.8
D 2 250 1694979 1355.33 5365 5182 1246.8

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