ASTROSAT CZTI

Data Quality Report

Orbit 42116

Creation date: 2024-06-27T22:37:05.949275
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_044T22_9000005750_42116cztM0_level2.fits modeM0/AS1A12_044T22_9000005750_42116cztM0_level2_quad_clean.evt
Size (bytes)358,727,04092,436,480
Size342.1 MB 88.2 MB
Events in quadrant A3,501,522617,828
Events in quadrant B2,502,533640,104
Events in quadrant C2,672,392611,347
Events in quadrant D4,155,213527,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141091
B0115931
C0115681
D0163751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5742190.330895%
B5743120.208950%
C574350.087063%
D57434277.435138%

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 7235 5743 3 3 0.04% 0.05%
B 7236 5744 4 4 0.06% 0.07%
C 7236 5744 3 3 0.04% 0.05%
D 7236 5744 359 359 4.96% 6.25%

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 15 222 539730 4098.27 634 620 131.5
A 10 83 508589 3861.54 634 620 131.5
A 3 137 7186 49.91 634 620 131.5
B 3 112 26273 205.57 627 611 124.8
B 12 111 15809 121.75 627 611 124.8
B 11 111 14635 112.34 627 611 124.8
C 15 214 236922 1617.4 617 620 146.1
C 8 79 27948 187.05 617 620 146.1
C 13 61 4127 24.0 617 620 146.1
D 13 249 1024191 7011.63 596 580 146.0
D 12 233 467300 3196.99 596 580 146.0
D 1 52 185288 1265.23 596 580 146.0

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