ASTROSAT CZTI

Data Quality Report

Orbit 51195

Creation date: 2025-03-17T12:35:34.750391
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_51195cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51195cztM0_level2_quad_clean.evt
Size (bytes)873,509,76097,709,760
Size833.0 MB 93.2 MB
Events in quadrant A5,560,580687,221
Events in quadrant B6,756,509704,345
Events in quadrant C13,569,505435,046
Events in quadrant D5,851,314594,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218272
B0254000
C0456050
D0228410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77192453.173986%
B771984010.882239%
C7719321741.676383%
D77195657.319601%

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 7719 7719 173 173 2.24% 2.24%
B 7719 7719 410 410 5.31% 5.31%
C 7719 7719 3015 3015 39.06% 39.06%
D 7719 7719 509 509 6.59% 6.59%

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 3 1043916 5363.69 785 767 194.5
A 9 160 279580 1433.61 785 767 194.5
A 3 62 229334 1175.25 785 767 194.5
B 12 18 1321055 8077.61 764 738 163.5
B 10 254 597670 3651.99 764 738 163.5
B 8 128 531414 3246.64 764 738 163.5
C 4 12 6994726 38927.84 640 635 179.7
C 10 252 968877 5389.06 640 635 179.7
C 12 247 784587 4363.33 640 635 179.7
D 10 172 661745 3210.3 737 714 205.9
D 8 176 578082 2803.99 737 714 205.9
D 2 216 379136 1837.81 737 714 205.9

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