ASTROSAT CZTI

Data Quality Report

Orbit 31959

Creation date: 2024-06-27T20:32:42.484930
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_109T01_9000004638_31959cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31959cztM0_level2_quad_clean.evt
Size (bytes)76,728,96015,986,880
Size73.2 MB 15.2 MB
Events in quadrant A362,160112,688
Events in quadrant B560,060112,696
Events in quadrant C775,58298,831
Events in quadrant D576,805104,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670256
B02375332
C03355579
D02499328

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162
B0151
C0151
D0151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68100.000000%
B67910.147275%
C66913420.029895%
D682568.211144%

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 774 694 0 0 0.00% 0.00%
B 776 687 0 0 0.00% 0.00%
C 777 678 18 18 2.32% 2.65%
D 776 694 50 50 6.44% 7.20%

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 13 254 1127 49.55 93 92 20.9
A 3 137 766 32.27 93 92 20.9
A 0 226 759 31.93 93 92 20.9
B 6 159 203305 10666.22 90 88 19.1
B 12 111 1964 98.47 90 88 19.1
B 11 111 1797 89.7 90 88 19.1
C 3 233 252199 11635.34 85 85 21.7
C 0 10 145923 6730.59 85 85 21.7
C 14 238 25569 1176.12 85 85 21.7
D 12 218 169369 7342.43 91 88 23.1
D 8 195 29226 1263.84 91 88 23.1
D 2 250 19947 861.37 91 88 23.1

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