ASTROSAT CZTI

Data Quality Report

Orbit 03764

Creation date: 2024-06-27T14:33:22.410199
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_248T01_9000000486_03764cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03764cztM0_level2_quad_clean.evt
Size (bytes)471,859,20082,131,840
Size450.0 MB 78.3 MB
Events in quadrant A3,616,466517,316
Events in quadrant B3,739,725519,066
Events in quadrant C3,106,844505,212
Events in quadrant D3,385,752492,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147613
B0151222
C0135992
D0144282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64962253.463670%
B64961422.185961%
C6496891.370074%
D64961342.062808%

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 7666 6496 51 51 0.67% 0.79%
B 7666 6496 3 3 0.04% 0.05%
C 7666 6497 0 0 0.00% 0.00%
D 7666 6496 33 33 0.43% 0.51%

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 305532 1851.25 805 789 164.6
A 13 251 118950 717.8 805 789 164.6
A 0 226 36100 214.5 805 789 164.6
B 15 204 366847 2341.36 814 796 156.3
B 5 70 168631 1073.52 814 796 156.3
B 15 54 21376 131.63 814 796 156.3
C 2 53 49651 273.09 773 775 179.0
C 8 128 14745 78.06 773 775 179.0
C 8 112 8265 41.85 773 775 179.0
D 2 37 223275 1080.04 768 753 206.0
D 8 112 29914 141.54 768 753 206.0
D 13 239 29316 138.63 768 753 206.0

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