ASTROSAT CZTI

Data Quality Report

Orbit 28824

Creation date: 2024-06-27T19:56:51.154712
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/AS1A10_121T01_9000004134_28824cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28824cztM0_level2_quad_clean.evt
Size (bytes)791,046,72097,776,000
Size754.4 MB 93.2 MB
Events in quadrant A3,509,337650,709
Events in quadrant B3,728,658661,133
Events in quadrant C4,715,788626,530
Events in quadrant D11,521,578525,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150182
B0155942
C0186812
D0391982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71072553.588012%
B71083354.712999%
C71084836.795160%
D7108330046.426562%

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 7177 7107 0 0 0.00% 0.00%
B 7178 7108 50 50 0.70% 0.70%
C 7178 7108 4 4 0.06% 0.06%
D 7178 7108 3161 3161 44.04% 44.47%

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 14 235 119295 669.78 869 849 176.8
A 13 254 14716 78.41 869 849 176.8
A 14 239 11973 62.9 869 849 176.8
B 5 172 165839 1006.61 863 841 163.9
B 10 246 37236 222.03 863 841 163.9
B 15 33 34801 207.18 863 841 163.9
C 3 233 1173467 6021.75 827 830 194.7
C 14 238 186912 955.57 827 830 194.7
C 14 254 83830 426.22 827 830 194.7
D 8 195 6855275 38291.45 744 721 179.0
D 1 52 1349019 7531.97 744 721 179.0
D 13 104 284433 1584.89 744 721 179.0

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