ASTROSAT CZTI

Data Quality Report

Orbit 20161219_A02_111T01_9000000900_level2

Creation date: 2025-11-08T17:51:24.410103
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/AS1A02_111T01_9000000900cztM0_level2.fits modeM0/AS1A02_111T01_9000000900cztM0_level2_quad_clean.evt
Size (bytes)206,366,400236,905,920
Size196.8 MB 225.9 MB
Events in quadrant A1,232,1481,481,921
Events in quadrant B1,190,8781,474,608
Events in quadrant C1,227,4781,410,699
Events in quadrant D990,7621,199,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502740
B0520590
C0474840
D0861720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A233694561.951303%
B233695292.263683%
C233692130.911464%
D2336921529.208781%

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 26594 23368 0 0 0.00% 0.00%
B 26594 23368 0 0 0.00% 0.00%
C 26594 23369 0 0 0.00% 0.00%
D 26594 23322 0 0 0.00% 0.00%

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 14 188 1264 11.65 319 299 82.8
A 0 29 1252 11.51 319 299 82.8
A 14 204 1055 9.13 319 299 82.8
B 2 9 1041 11.64 314 298 63.8
B 12 226 858 8.77 314 298 63.8
B 14 254 849 8.63 314 298 63.8
C 1 81 918 7.17 323 298 86.5
C 12 241 910 7.07 323 298 86.5
C 1 80 892 6.87 323 298 86.5
D 3 14 780 6.72 282 255 78.1
D 11 82 731 6.09 282 255 78.1
D 3 159 696 5.65 282 255 78.1

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