ASTROSAT CZTI

Data Quality Report

Orbit 46650

Creation date: 2024-06-27T23:25:55.587922
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/AS1A13_039T01_9000006246_46650cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46650cztM0_level2_quad_clean.evt
Size (bytes)500,068,800107,997,120
Size476.9 MB 103.0 MB
Events in quadrant A6,386,365726,381
Events in quadrant B3,635,377755,735
Events in quadrant C3,861,895688,215
Events in quadrant D4,102,486628,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234574
B0156351
C0166631
D0173371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67601932.855030%
B67611131.671350%
C67613334.925307%
D67613224.762609%

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 7800 6761 22 22 0.28% 0.33%
B 7801 6762 21 21 0.27% 0.31%
C 7801 6762 305 305 3.91% 4.51%
D 7801 6762 300 300 3.85% 4.44%

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 3560865 24289.21 712 697 146.6
A 7 3 28811 191.81 712 697 146.6
A 9 191 23245 153.83 712 697 146.6
B 10 128 400870 2850.88 720 699 140.4
B 0 189 158486 1124.1 720 699 140.4
B 4 171 43601 305.64 720 699 140.4
C 15 208 1029641 6420.79 690 696 160.3
C 14 254 46952 288.65 690 696 160.3
C 12 249 34796 212.79 690 696 160.3
D 1 52 826248 4822.83 684 663 171.2
D 13 249 301147 1755.34 684 663 171.2
D 2 37 128648 747.65 684 663 171.2

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