ASTROSAT CZTI

Data Quality Report

Orbit 48209

Creation date: 2024-08-27T14:46:54.434305
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/AS1C09_004T05_9000006416_48209cztM0_level2.fits modeM0/AS1C09_004T05_9000006416_48209cztM0_level2_quad_clean.evt
Size (bytes)1,206,668,160224,426,880
Size1.1 GB 214.0 MB
Events in quadrant A18,875,2621,871,472
Events in quadrant B3,316,902123,204
Events in quadrant C8,960,6461,846,450
Events in quadrant D12,085,7891,689,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0688423
B0200603
C0403653
D0484263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182006023.307692%
B181991819699.983516%
C181993601.978131%
D181995663.110061%

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 19750 18203 16 16 0.08% 0.09%
B 19748 18198 6 6 0.03% 0.03%
C 19749 18202 255 255 1.29% 1.40%
D 19749 18202 340 340 1.72% 1.87%

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 10981710 27243.57 1958 1914 403.0
A 14 235 154243 377.97 1958 1914 403.0
A 13 248 97360 236.82 1958 1914 403.0
B 2 177 2497729 88510.42 132 128 28.2
B 10 7 145358 5146.69 132 128 28.2
B 4 21 70659 2499.49 132 128 28.2
C 14 254 1108403 2439.29 1930 1935 453.6
C 12 2 153671 334.51 1930 1935 453.6
C 0 207 105023 227.26 1930 1935 453.6
D 2 165 3223615 6674.14 1928 1861 482.7
D 12 233 497599 1026.96 1928 1861 482.7
D 12 1 220317 452.55 1928 1861 482.7

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