ASTROSAT CZTI

Data Quality Report

Orbit 20201206_A10_073T01_9000004056_level2

Creation date: 2021-01-07T01:40:37.368136
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_073T01_9000004056cztM0_level2_bc.evt modeM0/AS1A10_073T01_9000004056cztM0_level2_quad_clean.evt
Size (bytes)5,819,849,2801,935,527,040
Size5.4 GB 1.8 GB
Events in quadrant A22,351,03813,791,584
Events in quadrant B47,140,63612,955,359
Events in quadrant C45,373,25612,639,098
Events in quadrant D54,546,28512,328,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020480
B020480
C020480
D020480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01450
B01450
C01450
D01450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02091650
B03122100
C02905890
D03271690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1008109290.921536%
B1008101189211.796449%
C10081057745.727606%
D10081085178.448567%

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 115216 100810 46 46 0.04% 0.05%
B 115216 100803 471 471 0.41% 0.47%
C 115216 100808 233 233 0.20% 0.23%
D 115216 100804 1259 1259 1.09% 1.25%

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 0 13 718521 593.23 5514 5447 1202.0
A 13 254 164357 132.2 5514 5447 1202.0
A 13 170 125608 99.96 5514 5447 1202.0
B 10 245 26214010 26578.5 5206 5102 986.1
B 0 190 217747 215.64 5206 5102 986.1
B 4 200 187912 185.39 5206 5102 986.1
C 3 233 25765898 21276.41 5072 5053 1210.8
C 2 16 71533 54.91 5072 5053 1210.8
C 15 208 39281 28.27 5072 5053 1210.8
D 1 52 15349793 12783.59 5176 5030 1200.3
D 8 195 10418686 8675.53 5176 5030 1200.3
D 2 250 3280687 2728.92 5176 5030 1200.3

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