ASTROSAT CZTI

Data Quality Report

Orbit 20220110_A11_106T03_9000004864_level2

Creation date: 2022-01-13T18:21:21.655454
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_106T03_9000004864cztM0_level2_bc.evt modeM0/AS1A11_106T03_9000004864cztM0_level2_quad_clean.evt
Size (bytes)6,193,805,7601,581,168,960
Size5.8 GB 1.5 GB
Events in quadrant A27,233,02610,276,055
Events in quadrant B37,737,56310,214,025
Events in quadrant C41,870,65310,045,652
Events in quadrant D72,824,8359,365,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04280
B04270
C04270
D04290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02462570
B02983340
C02893330
D04052030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023820
B023900
C023860
D023820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1166658460.725153%
B11677045213.871714%
C11665126862.302595%
D11627988617.620465%

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 166119 117048 8 8 0.00% 0.01%
B 166118 117154 134 134 0.08% 0.11%
C 166118 117011 332 332 0.20% 0.28%
D 166118 116705 2051 2051 1.23% 1.76%

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 15 169 1611863 1176.71 6203 6115 1364.6
A 14 238 914782 665.88 6203 6115 1364.6
A 13 6 325780 234.25 6203 6115 1364.6
B 5 172 7428949 6188.8 6125 5999 1199.4
B 0 189 1191026 988.0 6125 5999 1199.4
B 0 190 1190680 987.71 6125 5999 1199.4
C 4 254 5436613 4047.5 5941 5913 1341.7
C 15 214 4849400 3609.85 5941 5913 1341.7
C 3 233 4121057 3067.02 5941 5913 1341.7
D 8 195 24231153 15815.15 5809 5681 1531.8
D 8 230 4630800 3019.42 5809 5681 1531.8
D 12 6 4523262 2949.22 5809 5681 1531.8

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