ASTROSAT CZTI

Data Quality Report

Orbit 39098

Creation date: 2024-06-27T22:00:22.854378
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_067T01_9000005432_39098cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39098cztM0_level2_quad_clean.evt
Size (bytes)353,966,400102,283,200
Size337.6 MB 97.5 MB
Events in quadrant A3,140,486702,604
Events in quadrant B2,682,103724,016
Events in quadrant C3,530,396676,046
Events in quadrant D3,334,425621,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126853
B0111832
C0139322
D0132842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5339220.412062%
B5339140.262221%
C5339130.243491%
D5339821.535868%

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 9224 5341 3 3 0.03% 0.06%
B 9224 5341 5 5 0.05% 0.09%
C 9224 5341 10 10 0.11% 0.19%
D 9224 5341 62 62 0.67% 1.16%

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 408641 3102.12 659 648 131.5
A 12 16 130123 984.45 659 648 131.5
A 12 194 23075 170.52 659 648 131.5
B 5 172 62611 496.17 654 637 124.9
B 0 230 20539 159.34 654 637 124.9
B 0 199 18451 142.62 654 637 124.9
C 15 208 703844 4863.85 628 634 144.6
C 15 214 228961 1579.26 628 634 144.6
C 9 187 120199 826.99 628 634 144.6
D 12 235 227644 1501.43 631 617 151.2
D 13 171 169683 1118.11 631 617 151.2
D 2 249 130842 861.24 631 617 151.2

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