ASTROSAT CZTI

Data Quality Report

Orbit 40892

Creation date: 2024-06-27T22:21:50.030279
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_097T01_9000005574_40892cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40892cztM0_level2_quad_clean.evt
Size (bytes)385,744,32090,057,600
Size367.9 MB 85.9 MB
Events in quadrant A2,947,171608,237
Events in quadrant B3,361,331614,734
Events in quadrant C2,898,401593,459
Events in quadrant D4,644,538525,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121613
B0136962
C0120032
D0176442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497240.436602%
B54971973.583773%
C5497801.455339%
D54973386.148808%

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 7229 5498 2 2 0.03% 0.04%
B 7229 5498 125 125 1.73% 2.27%
C 7229 5498 56 56 0.77% 1.02%
D 7229 5498 296 296 4.09% 5.38%

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 558948 4542.19 598 585 122.9
A 13 248 33450 267.35 598 585 122.9
A 12 189 12844 99.72 598 585 122.9
B 5 255 575916 5059.46 592 576 113.7
B 4 171 269763 2367.19 592 576 113.7
B 15 85 87797 767.01 592 576 113.7
C 15 214 235006 1709.15 585 590 137.2
C 14 254 170172 1236.44 585 590 137.2
C 0 10 114423 829.97 585 590 137.2
D 12 79 701081 4956.53 572 556 141.3
D 2 249 558362 3946.73 572 556 141.3
D 12 128 506439 3579.35 572 556 141.3

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