ASTROSAT CZTI

Data Quality Report

Orbit 41764

Creation date: 2024-06-27T22:32:35.036250
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/AS1A12_044T19_9000005698_41764cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41764cztM0_level2_quad_clean.evt
Size (bytes)396,648,00094,069,440
Size378.3 MB 89.7 MB
Events in quadrant A3,101,081669,428
Events in quadrant B2,817,491670,298
Events in quadrant C3,365,774603,290
Events in quadrant D4,984,769532,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123913
B0116102
C0131052
D0183852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5316150.282167%
B5316360.677201%
C53162705.079007%
D531665412.302483%

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 7379 5317 4 4 0.05% 0.08%
B 7378 5315 15 15 0.20% 0.28%
C 7379 5317 268 268 3.63% 5.04%
D 7379 5317 659 659 8.93% 12.39%

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 566444 4355.58 638 627 129.9
A 7 16 23563 176.56 638 627 129.9
A 2 79 23138 173.29 638 627 129.9
B 3 112 112786 940.81 622 607 119.2
B 0 245 100729 839.69 622 607 119.2
B 15 54 36742 303.05 622 607 119.2
C 0 10 823271 6082.0 583 586 135.3
C 15 214 228891 1687.83 583 586 135.3
C 15 111 11071 77.51 583 586 135.3
D 13 249 1630344 11420.16 580 565 142.7
D 2 249 509888 3568.92 580 565 142.7
D 12 79 345806 2419.17 580 565 142.7

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