ASTROSAT CZTI

Data Quality Report

Orbit 35873

Creation date: 2022-06-08T20:34:47.731756
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/AS1A11_080T01_9000005146_35873cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35873cztM0_level2_quad_clean.evt
Size (bytes)443,376,00082,560,960
Size422.8 MB 78.7 MB
Events in quadrant A3,383,119541,505
Events in quadrant B3,055,201535,780
Events in quadrant C3,252,910531,230
Events in quadrant D3,365,661509,208

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136433
B0123052
C0127002
D0136042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5461230.421168%
B5461641.171947%
C54611532.801685%
D5461530.970518%

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 9345 5463 5 5 0.05% 0.09%
B 9345 5463 47 47 0.50% 0.86%
C 9345 5463 125 125 1.34% 2.29%
D 9345 5463 39 39 0.42% 0.71%

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 7 48 345168 2547.87 668 656 135.2
A 15 169 273050 2014.51 668 656 135.2
A 10 83 164830 1214.16 668 656 135.2
B 5 172 288518 2275.15 659 644 126.5
B 5 255 70074 548.73 659 644 126.5
B 4 232 30464 235.68 659 644 126.5
C 0 10 253526 1692.54 640 647 149.4
C 15 214 225434 1504.52 640 647 149.4
C 1 23 202913 1353.78 640 647 149.4
D 8 195 334025 2099.57 649 633 158.8
D 7 223 150828 945.87 649 633 158.8
D 13 249 112945 707.3 649 633 158.8

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