ASTROSAT CZTI

Data Quality Report

Orbit 28612

Creation date: 2024-06-27T19:54:00.172197
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/AS1A10_045T06_9000004108_28612cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28612cztM0_level2_quad_clean.evt
Size (bytes)1,366,228,800179,971,200
Size1.3 GB 171.6 MB
Events in quadrant A9,277,0221,115,579
Events in quadrant B7,993,2581,144,833
Events in quadrant C7,576,2791,095,609
Events in quadrant D15,505,6081,045,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375313
B0336633
C0321143
D0567124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151942261.487429%
B151962791.836009%
C151964983.277178%
D15195159910.523198%

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 17755 15197 48 48 0.27% 0.32%
B 17756 15196 114 114 0.64% 0.75%
C 17756 15196 2 2 0.01% 0.01%
D 17756 15198 1426 1426 8.03% 9.38%

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 15 47 2121468 5717.64 1849 1809 370.7
A 13 254 26622 66.93 1849 1809 370.7
A 3 137 18417 44.8 1849 1809 370.7
B 10 245 675966 1929.74 1831 1780 349.4
B 5 255 47023 129.5 1831 1780 349.4
B 12 111 44343 121.83 1831 1780 349.4
C 14 238 415396 1003.07 1766 1777 412.4
C 14 254 186336 447.58 1766 1777 412.4
C 7 247 57067 134.08 1766 1777 412.4
D 1 52 7407937 18082.97 1733 1690 409.6
D 8 195 1254471 3058.77 1733 1690 409.6
D 2 250 134728 324.82 1733 1690 409.6

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