ASTROSAT CZTI

Data Quality Report

Orbit 24677

Creation date: 2024-06-27T19:08:38.943059
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/AS1T03_191T01_9000003618_24677cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24677cztM0_level2_quad_clean.evt
Size (bytes)488,479,680135,858,240
Size465.9 MB 129.6 MB
Events in quadrant A3,179,995939,451
Events in quadrant B3,237,666949,887
Events in quadrant C3,217,372908,357
Events in quadrant D4,733,836880,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135051
B0136361
C0137401
D0184571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6257410.655266%
B6258580.926814%
C6258821.310323%
D62582233.563439%

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 7457 6257 0 0 0.00% 0.00%
B 7458 6258 5 5 0.07% 0.08%
C 7458 6258 0 0 0.00% 0.00%
D 7458 6258 205 205 2.75% 3.28%

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 96 9819 55.79 822 807 161.5
A 13 254 9479 53.68 822 807 161.5
A 0 226 7007 38.38 822 807 161.5
B 0 189 54240 350.83 810 791 152.3
B 12 111 17458 109.4 810 791 152.3
B 11 111 16008 99.88 810 791 152.3
C 14 238 127113 700.49 789 796 180.3
C 13 61 5447 25.79 789 796 180.3
C 3 233 4952 23.05 789 796 180.3
D 1 52 1098090 5760.96 799 776 190.5
D 8 195 561930 2946.09 799 776 190.5
D 2 234 24803 126.14 799 776 190.5

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