ASTROSAT CZTI

Data Quality Report

Orbit 51155

Creation date: 2025-03-14T01:06:22.717277
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/AS1C07_001T01_9000006454_51155cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51155cztM0_level2_quad_clean.evt
Size (bytes)2,069,061,120235,699,200
Size1.9 GB 224.8 MB
Events in quadrant A17,218,9691,611,770
Events in quadrant B11,595,4171,806,028
Events in quadrant C30,858,0111,075,880
Events in quadrant D15,482,8861,356,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0642122
B0475442
C01046223
D0590062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1863512336.616582%
B186357303.917360%
C18635706537.912530%
D18635191010.249530%

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 19785 18637 687 687 3.47% 3.69%
B 19785 18637 351 351 1.77% 1.88%
C 19785 18636 6788 6788 34.31% 36.42%
D 19785 18637 1719 1719 8.69% 9.22%

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 12 80 4935502 10331.78 1935 1884 477.5
A 12 3 2502252 5236.17 1935 1884 477.5
A 7 29 350136 729.3 1935 1884 477.5
B 5 185 905522 2197.49 1940 1873 411.2
B 0 197 623615 1511.95 1940 1873 411.2
B 4 171 490272 1187.68 1940 1873 411.2
C 12 247 9733112 21196.27 1657 1640 459.1
C 4 12 6873597 14967.92 1657 1640 459.1
C 4 13 1566211 3407.82 1657 1640 459.1
D 15 184 2710122 5342.46 1833 1775 506.9
D 7 126 1036107 2040.31 1833 1775 506.9
D 7 60 763293 1502.16 1833 1775 506.9

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