ASTROSAT CZTI

Data Quality Report

Orbit 30646

Creation date: 2024-06-27T20:18:07.448890
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_103T02_9000004416_30646cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30646cztM0_level2_quad_clean.evt
Size (bytes)821,387,52092,194,560
Size783.3 MB 87.9 MB
Events in quadrant A4,156,153607,446
Events in quadrant B5,500,033607,290
Events in quadrant C3,922,091584,003
Events in quadrant D10,830,762509,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165562
B0213702
C0158812
D0369972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69312383.433848%
B69312072.986582%
C69312343.376136%
D6931158822.911557%

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 7901 6932 104 104 1.32% 1.50%
B 7901 6932 28 28 0.35% 0.40%
C 7901 6932 43 43 0.54% 0.62%
D 7901 6932 1315 1315 16.64% 18.97%

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 662471 3727.25 899 882 177.5
A 8 192 20341 109.63 899 882 177.5
A 13 254 12816 67.23 899 882 177.5
B 6 159 1845912 10992.8 889 869 167.8
B 5 172 92995 548.89 889 869 167.8
B 12 111 20219 115.29 889 869 167.8
C 10 22 253099 1273.85 858 864 198.0
C 14 238 140748 706.45 858 864 198.0
C 3 233 91028 455.35 858 864 198.0
D 8 195 7220972 37646.4 814 793 191.8
D 10 253 254969 1325.29 814 793 191.8
D 12 227 199195 1034.48 814 793 191.8

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