ASTROSAT CZTI

Data Quality Report

Orbit 23155

Creation date: 2024-06-27T18:50:38.012781
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/AS1A08_009T01_9000003422_23155cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23155cztM0_level2_quad_clean.evt
Size (bytes)576,636,48078,307,200
Size549.9 MB 74.7 MB
Events in quadrant A3,257,580494,288
Events in quadrant B3,337,572500,432
Events in quadrant C3,392,778481,976
Events in quadrant D7,020,242426,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140652
B0142152
C0143262
D0255043

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6715610.908414%
B6715640.953090%
C67151181.757260%
D6714118417.634793%

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 7780 6715 0 0 0.00% 0.00%
B 7780 6715 2 2 0.03% 0.03%
C 7780 6715 0 0 0.00% 0.00%
D 7779 6714 989 989 12.71% 14.73%

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 13 254 9061 48.84 844 827 168.6
A 0 226 7431 39.17 844 827 168.6
A 3 137 7368 38.79 844 827 168.6
B 0 190 36710 223.12 840 819 160.9
B 12 111 19000 113.02 840 819 160.9
B 11 111 16826 99.51 840 819 160.9
C 14 238 129791 685.52 809 814 188.1
C 0 10 53464 279.84 809 814 188.1
C 7 247 38682 201.27 809 814 188.1
D 1 52 3742094 19809.24 773 751 188.9
D 7 238 132342 696.73 773 751 188.9
D 12 233 132201 695.99 773 751 188.9

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