ASTROSAT CZTI

Data Quality Report

Orbit 46971

Creation date: 2024-06-27T23:30:07.855603
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_071T07_9000006290_46971cztM0_level2.fits modeM0/AS1A13_071T07_9000006290_46971cztM0_level2_quad_clean.evt
Size (bytes)775,221,120106,381,440
Size739.3 MB 101.5 MB
Events in quadrant A7,037,278767,385
Events in quadrant B10,678,721592,116
Events in quadrant C3,390,389754,783
Events in quadrant D7,029,573602,098

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258141
B0367941
C0155251
D0259931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72442172.995583%
B7245236132.587992%
C7244190.262286%
D7244112515.530094%

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 7604 7245 23 23 0.30% 0.32%
B 7605 7246 1908 1908 25.09% 26.33%
C 7604 7245 11 11 0.14% 0.15%
D 7604 7245 1046 1046 13.76% 14.44%

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 3864385 24138.95 776 759 160.1
A 9 191 66442 410.37 776 759 160.1
A 14 248 53880 331.89 776 759 160.1
B 3 112 7253577 52198.49 711 690 138.9
B 5 172 292876 2102.84 711 690 138.9
B 4 171 123482 883.72 711 690 138.9
C 15 208 294479 1640.32 762 766 179.1
C 14 254 62796 346.42 762 766 179.1
C 12 250 21687 116.84 762 766 179.1
D 1 52 3365976 18697.56 708 683 180.0
D 12 233 304848 1689.94 708 683 180.0
D 13 249 214503 1187.98 708 683 180.0

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