ASTROSAT CZTI

Data Quality Report

Orbit 18719

Creation date: 2024-06-27T17:53:55.739836
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/AS1T03_091T01_9000002798_18719cztM0_level2.evt modeM0/AS1T03_091T01_9000002798_18719cztM0_level2_quad_clean.evt
Size (bytes)512,637,120106,721,280
Size488.9 MB 101.8 MB
Events in quadrant A3,459,608698,026
Events in quadrant B4,606,814694,641
Events in quadrant C3,589,449668,997
Events in quadrant D3,372,978661,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151801
B0186011
C0155051
D0152821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7313510.697388%
B73134155.674826%
C73131181.613565%
D7313170.232463%

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 7773 7314 1 1 0.01% 0.01%
B 7773 7314 227 227 2.92% 3.10%
C 7773 7314 3 3 0.04% 0.04%
D 7773 7314 4 4 0.05% 0.05%

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 4 2 13978 72.86 890 870 179.9
A 13 254 11593 59.6 890 870 179.9
A 14 111 8375 41.72 890 870 179.9
B 10 245 1063528 6339.22 877 856 167.6
B 7 220 47728 279.61 877 856 167.6
B 12 111 19971 114.03 877 856 167.6
C 3 233 142438 721.78 840 844 196.2
C 14 238 132026 668.7 840 844 196.2
C 0 207 28199 139.44 840 844 196.2
D 12 110 62728 296.04 852 826 209.1
D 7 238 46450 218.19 852 826 209.1
D 2 234 33161 154.64 852 826 209.1

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