ASTROSAT CZTI

Data Quality Report

Orbit 39619

Creation date: 2024-06-27T22:06:53.475963
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_018T01_9000005488_39619cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39619cztM0_level2_quad_clean.evt
Size (bytes)397,776,96096,667,200
Size379.3 MB 92.2 MB
Events in quadrant A2,984,348679,852
Events in quadrant B2,605,817685,024
Events in quadrant C5,744,830588,337
Events in quadrant D2,979,118604,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123033
B0111582
C0206192
D0124462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5276160.303260%
B5276260.492798%
C527667812.850644%
D5276701.326763%

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 7249 5277 9 9 0.12% 0.17%
B 7249 5277 16 16 0.22% 0.30%
C 7249 5277 653 653 9.01% 12.37%
D 7249 5277 64 64 0.88% 1.21%

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 465527 3701.69 620 610 125.6
A 15 222 59709 470.55 620 610 125.6
A 0 8 42532 333.79 620 610 125.6
B 5 255 135927 1168.15 614 599 115.8
B 5 172 38718 329.04 614 599 115.8
B 0 213 17109 142.51 614 599 115.8
C 9 187 2549913 18590.75 591 594 137.1
C 15 208 634677 4624.01 591 594 137.1
C 15 214 214797 1562.06 591 594 137.1
D 2 249 168707 1139.57 610 596 147.5
D 12 227 134508 907.75 610 596 147.5
D 12 233 74415 500.4 610 596 147.5

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