ASTROSAT CZTI

Data Quality Report

Orbit 28519

Creation date: 2024-06-27T19:52:47.751265
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/AS1A10_058T09_9000004100_28519cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28519cztM0_level2_quad_clean.evt
Size (bytes)625,008,96094,809,600
Size596.1 MB 90.4 MB
Events in quadrant A4,257,196602,407
Events in quadrant B4,056,659611,053
Events in quadrant C3,645,042585,059
Events in quadrant D6,479,190568,372

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173932
B0166352
C0151842
D0243232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72452813.878537%
B72451532.111801%
C7245951.311249%
D72455948.198758%

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 7810 7246 197 197 2.52% 2.72%
B 7810 7246 76 76 0.97% 1.05%
C 7810 7246 1 1 0.01% 0.01%
D 7810 7246 656 656 8.40% 9.05%

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 15 174 854795 4787.27 879 861 178.4
A 13 254 13046 68.31 879 861 178.4
A 3 137 8548 43.09 879 861 178.4
B 10 245 441750 2608.13 880 856 169.0
B 5 172 63381 369.87 880 856 169.0
B 0 230 57722 336.39 880 856 169.0
C 3 233 187748 936.71 848 854 199.5
C 14 238 137015 682.44 848 854 199.5
C 7 247 15454 73.18 848 854 199.5
D 1 52 2004625 9905.46 841 817 202.3
D 8 195 1067084 5270.9 841 817 202.3
D 2 250 104549 512.78 841 817 202.3

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