ASTROSAT CZTI

Data Quality Report

Orbit 03905

Creation date: 2024-06-27T14:35:03.766679
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/AS1G05_167T01_9000000500_03905cztM0_level2.evt modeM0/AS1G05_167T01_9000000500_03905cztM0_level2_quad_clean.evt
Size (bytes)558,780,48089,470,080
Size532.9 MB 85.3 MB
Events in quadrant A3,448,251582,758
Events in quadrant B6,720,546543,477
Events in quadrant C2,998,470577,114
Events in quadrant D3,317,876555,880

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148623
B0243855
C0135002
D0145982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6445991.536074%
B6444123619.180633%
C6445590.915438%
D6445921.427463%

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 8595 6447 49 49 0.57% 0.76%
B 8595 6447 1115 1115 12.97% 17.29%
C 8595 6447 13 13 0.15% 0.20%
D 8595 6447 75 75 0.87% 1.16%

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 0 118 187098 1205.54 752 739 154.6
A 0 50 142631 917.88 752 739 154.6
A 0 199 109361 702.66 752 739 154.6
B 7 221 3668362 26711.23 720 703 137.3
B 15 204 143284 1038.4 720 703 137.3
B 10 16 76541 552.32 720 703 137.3
C 10 65 41213 234.04 741 749 172.9
C 7 222 34088 192.83 741 749 172.9
C 12 4 19016 105.65 741 749 172.9
D 1 20 211878 1196.72 731 713 176.5
D 13 223 115426 650.1 731 713 176.5
D 13 239 79846 448.46 731 713 176.5

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
Veto Counter