ASTROSAT CZTI

Data Quality Report

Orbit 31149

Creation date: 2024-06-27T20:24:06.438016
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/AS1C06_002T01_9000004500_31149cztM0_level2.evt modeM0/AS1C06_002T01_9000004500_31149cztM0_level2_quad_clean.evt
Size (bytes)640,549,440136,048,320
Size610.9 MB 129.7 MB
Events in quadrant A3,300,846961,236
Events in quadrant B5,384,330934,626
Events in quadrant C3,526,766913,743
Events in quadrant D6,763,650873,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138861
B0201841
C0145101
D0245651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279881.401497%
B62802323.694268%
C62801582.515924%
D62805038.009554%

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 7524 6280 0 0 0.00% 0.00%
B 7525 6281 36 36 0.48% 0.57%
C 7525 6281 2 2 0.03% 0.03%
D 7525 6281 344 344 4.57% 5.48%

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 12 96 17294 97.48 850 836 168.8
A 13 254 13141 72.88 850 836 168.8
A 3 137 7437 39.1 850 836 168.8
B 6 159 1781125 11691.92 822 804 152.3
B 0 190 123604 806.47 822 804 152.3
B 4 80 85763 557.95 822 804 152.3
C 14 238 137446 740.12 806 812 184.6
C 1 16 117474 631.94 806 812 184.6
C 0 10 64443 344.68 806 812 184.6
D 8 195 2039966 9716.95 802 789 209.9
D 13 174 910209 4333.51 802 789 209.9
D 2 250 372180 1769.73 802 789 209.9

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