ASTROSAT CZTI

Data Quality Report

Orbit 41457

Creation date: 2024-06-27T22:29:17.621724
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/AS1T05_100T01_9000005668_41457cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41457cztM0_level2_quad_clean.evt
Size (bytes)310,875,84089,608,320
Size296.5 MB 85.5 MB
Events in quadrant A2,842,801604,477
Events in quadrant B2,436,209619,543
Events in quadrant C3,050,749565,919
Events in quadrant D2,758,024545,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118603
B0110292
C0125882
D0121252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5383130.241501%
B5383100.185770%
C53832314.291287%
D5383571.058889%

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 7145 5384 2 2 0.03% 0.04%
B 7145 5384 1 1 0.01% 0.02%
C 7145 5384 221 221 3.09% 4.10%
D 7145 5384 43 43 0.60% 0.80%

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 10 83 535415 4367.15 591 578 122.5
A 2 79 14683 115.17 591 578 122.5
A 13 254 8375 63.66 591 578 122.5
B 0 190 102851 889.06 590 573 115.0
B 12 111 14276 119.11 590 573 115.0
B 11 111 13317 110.78 590 573 115.0
C 0 10 599315 4545.14 564 567 131.7
C 15 214 220962 1673.03 564 567 131.7
C 9 54 24346 180.51 564 567 131.7
D 12 233 207214 1452.86 578 561 142.2
D 13 249 132419 927.02 578 561 142.2
D 1 47 107445 751.44 578 561 142.2

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