ASTROSAT CZTI

Data Quality Report

Orbit 50698

Creation date: 2025-02-11T05:08:21.778829
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/AS1T05_241T01_9000006446_50698cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50698cztM0_level2_quad_clean.evt
Size (bytes)575,539,20095,054,400
Size548.9 MB 90.7 MB
Events in quadrant A5,756,898580,098
Events in quadrant B3,853,589691,968
Events in quadrant C5,836,379587,333
Events in quadrant D5,336,440550,208

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215113
B0163072
C0219042
D0208692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A672173910.995388%
B67211942.886475%
C67216499.656301%
D67215848.689183%

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 7756 6722 606 606 7.81% 9.02%
B 7756 6722 99 99 1.28% 1.47%
C 7756 6722 536 536 6.91% 7.97%
D 7756 6722 448 448 5.78% 6.66%

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 1987314 11462.05 691 673 173.3
A 4 3 336617 1938.25 691 673 173.3
A 8 38 173849 999.15 691 673 173.3
B 5 172 307100 2019.14 713 688 151.8
B 8 128 94525 618.35 713 688 151.8
B 10 29 71839 468.86 713 688 151.8
C 15 231 1157871 6118.17 684 679 189.1
C 0 209 340080 1794.44 684 679 189.1
C 13 3 303765 1602.44 684 679 189.1
D 7 191 537523 2851.77 677 653 188.3
D 2 249 391501 2076.12 677 653 188.3
D 7 110 302935 1605.67 677 653 188.3

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