ASTROSAT CZTI

Data Quality Report

Orbit 31183

Creation date: 2024-06-27T20:24:25.468397
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_058T02_9000004510_31183cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31183cztM0_level2_quad_clean.evt
Size (bytes)718,107,84093,435,840
Size684.8 MB 89.1 MB
Events in quadrant A3,541,993613,649
Events in quadrant B6,814,161568,937
Events in quadrant C3,621,542587,182
Events in quadrant D7,290,615564,720

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150271
B0251873
C0151131
D0269381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7106731.027301%
B710682011.539544%
C71061872.631579%
D71065868.246552%

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 7566 7108 8 8 0.11% 0.11%
B 7566 7108 417 417 5.51% 5.87%
C 7566 7108 2 2 0.03% 0.03%
D 7566 7108 376 376 4.97% 5.29%

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 91545 509.62 893 876 177.9
A 13 254 14969 79.21 893 876 177.9
A 3 137 9275 47.21 893 876 177.9
B 6 159 1916861 11466.27 853 831 167.1
B 4 80 1432086 8565.19 853 831 167.1
B 0 190 53422 314.73 853 831 167.1
C 14 238 159440 778.07 856 860 203.8
C 0 10 64666 313.06 856 860 203.8
C 14 254 30169 143.8 856 860 203.8
D 8 195 3967866 19489.69 853 829 203.5
D 2 250 30153 144.07 853 829 203.5
D 2 234 28843 137.63 853 829 203.5

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