ASTROSAT CZTI

Data Quality Report

Orbit 09208

Creation date: 2024-06-27T15:42:43.225840
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/AS1C02_042T02_9000001284_09208cztM0_level2.evt modeM0/AS1C02_042T02_9000001284_09208cztM0_level2_quad_clean.evt
Size (bytes)560,733,12072,270,720
Size534.8 MB 68.9 MB
Events in quadrant A4,006,021438,764
Events in quadrant B3,622,454444,553
Events in quadrant C3,229,649434,479
Events in quadrant D5,654,628388,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162273
B0150882
C0142442
D0214352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69191041.503107%
B69191161.676543%
C6919741.069519%
D691972010.406128%

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 7709 6920 5 5 0.06% 0.07%
B 7709 6920 7 7 0.09% 0.10%
C 7709 6920 0 0 0.00% 0.00%
D 7709 6920 635 635 8.24% 9.18%

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 8 5 512858 2945.54 846 829 173.8
A 1 162 121176 692.32 846 829 173.8
A 5 16 36231 203.66 846 829 173.8
B 8 234 251286 1516.1 853 831 165.2
B 0 187 26309 154.23 853 831 165.2
B 12 111 18164 104.92 853 831 165.2
C 3 233 15723 77.62 823 829 191.9
C 13 61 6318 28.61 823 829 191.9
C 8 222 2819 10.37 823 829 191.9
D 4 95 1228165 6209.86 787 767 197.7
D 1 52 1005395 5082.78 787 767 197.7
D 9 64 257273 1297.76 787 767 197.7

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