ASTROSAT CZTI

Data Quality Report

Orbit 48566

Creation date: 2024-09-23T11:35:44.817004
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_037T01_9000006436_48566cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48566cztM0_level2_quad_clean.evt
Size (bytes)506,675,520115,724,160
Size483.2 MB 110.4 MB
Events in quadrant A7,609,292730,754
Events in quadrant B3,667,562779,599
Events in quadrant C3,370,500768,922
Events in quadrant D3,508,713687,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02822826
B01670414
C01614112
D01657213

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77096147.964717%
B77104686.070039%
C77112683.475554%
D77112983.864609%

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 8690 7718 0 0 0.00% 0.00%
B 8690 7718 26 26 0.30% 0.34%
C 8690 7718 0 0 0.00% 0.00%
D 8690 7718 14 14 0.16% 0.18%

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 4285423 23893.58 848 827 179.3
A 12 189 48982 268.54 848 827 179.3
A 13 254 14077 73.89 848 827 179.3
B 12 18 144933 835.37 857 825 172.5
B 5 255 79761 457.58 857 825 172.5
B 12 16 25516 143.13 857 825 172.5
C 10 20 10057 45.17 859 859 203.6
C 12 250 8125 35.69 859 859 203.6
C 13 61 5808 24.31 859 859 203.6
D 7 96 50039 230.27 850 821 213.7
D 13 171 47115 216.59 850 821 213.7
D 2 234 38909 178.2 850 821 213.7

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