ASTROSAT CZTI

Data Quality Report

Orbit 40942

Creation date: 2024-06-27T22:22:31.159154
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_052T04_9000005582_40942cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40942cztM0_level2_quad_clean.evt
Size (bytes)360,097,92087,289,920
Size343.4 MB 83.2 MB
Events in quadrant A2,766,058598,074
Events in quadrant B3,193,758599,316
Events in quadrant C2,640,164570,666
Events in quadrant D4,308,511496,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115363
B0131312
C0112812
D0166282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5408100.184911%
B54081102.034024%
C5408360.665680%
D54085039.301036%

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 7080 5409 2 2 0.03% 0.04%
B 7080 5409 67 67 0.95% 1.24%
C 7080 5409 35 35 0.49% 0.65%
D 7080 5409 435 435 6.14% 8.04%

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 492733 4174.88 578 566 117.9
A 13 6 17868 146.77 578 566 117.9
A 2 79 9027 71.77 578 566 117.9
B 0 229 441848 3985.96 569 553 110.7
B 5 255 384301 3466.17 569 553 110.7
B 15 35 52620 470.29 569 553 110.7
C 15 214 251646 1910.95 564 567 131.4
C 0 10 133673 1013.06 564 567 131.4
C 14 254 22824 169.4 564 567 131.4
D 2 249 783860 5930.66 543 528 132.1
D 12 6 740413 5601.72 543 528 132.1
D 13 249 570855 4317.98 543 528 132.1

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