ASTROSAT CZTI

Data Quality Report

Orbit 08636

Creation date: 2024-06-27T15:35:16.556744
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/AS1G07_024T01_9000001206_08636cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08636cztM0_level2_quad_clean.evt
Size (bytes)440,294,400119,171,520
Size419.9 MB 113.7 MB
Events in quadrant A2,922,431793,539
Events in quadrant B3,210,944809,616
Events in quadrant C3,192,605790,779
Events in quadrant D3,563,139758,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133914
B0140521
C0141271
D0153271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556300.457596%
B6557440.671039%
C65571141.738600%
D65571442.196126%

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 7587 6557 1 1 0.01% 0.02%
B 7587 6557 15 15 0.20% 0.23%
C 7587 6557 78 78 1.03% 1.19%
D 7587 6557 103 103 1.36% 1.57%

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 5 16 21760 138.54 749 732 151.8
A 15 174 14659 91.75 749 732 151.8
A 12 194 6952 40.98 749 732 151.8
B 0 168 55145 380.28 757 740 143.1
B 15 255 51061 351.74 757 740 143.1
B 4 80 37099 254.14 757 740 143.1
C 8 208 295154 1743.17 731 734 168.9
C 14 67 39381 228.82 731 734 168.9
C 13 61 5724 29.54 731 734 168.9
D 1 52 496849 2738.72 732 710 181.2
D 2 14 117928 647.05 732 710 181.2
D 9 64 48637 264.56 732 710 181.2

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