ASTROSAT CZTI

Data Quality Report

Orbit 42302

Creation date: 2024-06-27T22:38:02.290450
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/AS1P01_999T99_9000005772_42302cztM0_level2.fits modeM0/AS1P01_999T99_9000005772_42302cztM0_level2_quad_clean.evt
Size (bytes)303,120,00089,910,720
Size289.1 MB 85.7 MB
Events in quadrant A2,844,464610,628
Events in quadrant B2,519,400622,002
Events in quadrant C2,375,620587,013
Events in quadrant D3,079,884542,047

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115042
B0109742
C0103842
D0127582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5147190.369147%
B5147280.544006%
C514740.077715%
D5147470.913153%

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 7240 5148 7 7 0.10% 0.14%
B 7240 5148 15 15 0.21% 0.29%
C 7240 5148 0 0 0.00% 0.00%
D 7240 5148 47 47 0.65% 0.91%

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 585260 4963.56 573 563 117.8
A 13 248 17517 143.92 573 563 117.8
A 15 252 16393 134.38 573 563 117.8
B 4 171 89372 806.51 571 557 110.1
B 0 229 61098 549.76 571 557 110.1
B 5 32 42092 377.17 571 557 110.1
C 15 214 216776 1687.96 551 555 128.1
C 12 249 7827 56.77 551 555 128.1
C 13 61 3775 25.13 551 555 128.1
D 1 52 466999 3415.88 550 533 136.6
D 5 171 126140 919.81 550 533 136.6
D 12 233 98550 717.77 550 533 136.6

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