ASTROSAT CZTI

Data Quality Report

Orbit 38775

Creation date: 2024-06-27T21:56:15.009505
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_051T01_9000005394_38775cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38775cztM0_level2_quad_clean.evt
Size (bytes)905,397,120248,440,320
Size863.5 MB 236.9 MB
Events in quadrant A7,717,7011,689,812
Events in quadrant B7,912,8901,654,257
Events in quadrant C7,822,3391,630,991
Events in quadrant D8,863,7171,481,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327785
B0343574
C0333674
D0379104

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15452340.220036%
B154524743.067564%
C154521551.003106%
D154525373.475278%

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 19842 15455 14 14 0.07% 0.09%
B 19842 15455 345 345 1.74% 2.23%
C 19842 15455 90 90 0.45% 0.58%
D 19842 15455 404 404 2.04% 2.61%

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 994407 2890.17 1706 1670 343.5
A 15 174 27109 74.06 1706 1670 343.5
A 13 248 26903 73.46 1706 1670 343.5
B 4 171 1227560 3771.08 1674 1623 325.1
B 0 230 59199 177.11 1674 1623 325.1
B 12 111 41951 124.05 1674 1623 325.1
C 15 214 678589 1750.26 1657 1666 386.8
C 14 254 477350 1229.93 1657 1666 386.8
C 0 10 93553 237.58 1657 1666 386.8
D 2 16 1012912 2556.14 1632 1588 395.6
D 5 222 358907 903.13 1632 1588 395.6
D 12 233 338834 852.4 1632 1588 395.6

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