ASTROSAT CZTI

Data Quality Report

Orbit 02466

Creation date: 2024-06-27T14:18:11.083110
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/AS1G02_018T06_9000000370_02466cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02466cztM0_level2_quad_clean.evt
Size (bytes)532,860,480104,189,760
Size508.2 MB 99.4 MB
Events in quadrant A4,250,981647,190
Events in quadrant B3,781,736666,853
Events in quadrant C3,623,998659,498
Events in quadrant D3,948,558636,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183093
B0166712
C0164082
D0174682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78353494.454371%
B78351081.378430%
C7835430.548819%
D7836841.071975%

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 8015 7836 219 219 2.73% 2.79%
B 8015 7836 2 2 0.02% 0.03%
C 8015 7836 3 3 0.04% 0.04%
D 8016 7837 44 44 0.55% 0.56%

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 8 192 727169 3851.11 913 893 188.6
A 12 194 10482 50.85 913 893 188.6
A 0 226 9800 47.23 913 893 188.6
B 4 48 47675 253.53 945 918 184.4
B 15 85 33899 178.83 945 918 184.4
B 5 6 16526 84.63 945 918 184.4
C 8 112 33129 150.94 904 904 213.5
C 12 4 22081 99.19 904 904 213.5
C 8 128 14536 63.85 904 904 213.5
D 7 67 189232 873.64 896 873 215.6
D 13 53 130276 600.19 896 873 215.6
D 2 184 54832 250.27 896 873 215.6

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