ASTROSAT CZTI

Data Quality Report

Orbit 16958

Creation date: 2024-06-27T17:30:02.980425
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/AS1A05_188T01_9000002520_16958cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16958cztM0_level2_quad_clean.evt
Size (bytes)468,921,60097,862,400
Size447.2 MB 93.3 MB
Events in quadrant A3,068,653632,376
Events in quadrant B3,872,813638,048
Events in quadrant C3,462,449614,671
Events in quadrant D3,338,003607,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137032
B0159912
C0143782
D0146172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6760200.295858%
B67602633.890533%
C6760520.769231%
D6760260.384615%

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 7676 6762 0 0 0.00% 0.00%
B 7676 6762 118 118 1.54% 1.75%
C 7676 6762 0 0 0.00% 0.00%
D 7676 6762 7 7 0.09% 0.10%

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 12 189 7497 41.52 796 778 161.8
A 0 226 7010 38.51 796 778 161.8
A 12 194 5817 31.14 796 778 161.8
B 3 64 424525 2780.32 795 775 152.4
B 15 35 233877 1529.43 795 775 152.4
B 3 209 22856 144.88 795 775 152.4
C 3 233 342940 1899.16 767 772 180.2
C 14 238 118626 654.13 767 772 180.2
C 13 61 5348 25.4 767 772 180.2
D 1 52 309045 1634.2 773 749 188.7
D 15 0 35070 181.93 773 749 188.7
D 2 234 29864 154.33 773 749 188.7

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