ASTROSAT CZTI

Data Quality Report

Orbit 48073

Creation date: 2024-08-19T10:17:16.715084
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_073T04_9000006396_48073cztM0_level2.fits modeM0/AS1A13_073T04_9000006396_48073cztM0_level2_quad_clean.evt
Size (bytes)509,667,84094,193,280
Size486.1 MB 89.8 MB
Events in quadrant A7,683,945800,562
Events in quadrant B1,290,537116
Events in quadrant C3,380,892809,321
Events in quadrant D5,908,636709,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279663
B080213
C0160143
D0228223

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76454005.232178%
B7645764399.973839%
C7646450.588543%
D76464736.186241%

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 8835 7648 24 24 0.27% 0.31%
B 8834 7644 2 2 0.02% 0.03%
C 8836 7649 2 2 0.02% 0.03%
D 8836 7649 389 389 4.40% 5.09%

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 4223372 23561.48 857 840 179.2
A 0 31 132668 735.59 857 840 179.2
A 13 254 14577 76.65 857 840 179.2
B 2 177 1058170 82150.47 54 52 12.9
B 5 32 14180 1096.87 54 52 12.9
B 12 111 1507 112.96 54 52 12.9
C 12 2 15953 74.05 858 861 203.8
C 14 254 11115 50.31 858 861 203.8
C 15 208 8207 36.05 858 861 203.8
D 2 165 1671223 7897.86 836 811 211.5
D 13 84 553385 2612.62 836 811 211.5
D 2 249 307584 1450.45 836 811 211.5

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