ASTROSAT CZTI

Data Quality Report

Orbit 06777

Creation date: 2024-06-27T15:11:34.473652
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/AS1G06_086T02_9000000936_06777cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06777cztM0_level2_quad_clean.evt
Size (bytes)501,482,88096,134,400
Size478.3 MB 91.7 MB
Events in quadrant A3,594,292597,854
Events in quadrant B3,686,570609,835
Events in quadrant C3,567,461596,609
Events in quadrant D3,814,435569,879

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161433
B0163472
C0160832
D0166682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7725610.789644%
B7725791.022654%
C7725450.582524%
D7725370.478964%

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 9080 7727 2 2 0.02% 0.03%
B 9080 7727 0 0 0.00% 0.00%
C 9080 7727 6 6 0.07% 0.08%
D 9080 7727 15 15 0.17% 0.19%

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 0 23 33906 174.25 913 892 189.5
A 13 248 32696 167.86 913 892 189.5
A 0 226 11109 53.92 913 892 189.5
B 0 214 37417 203.93 926 902 179.1
B 12 111 18042 95.72 926 902 179.1
B 0 228 16866 89.16 926 902 179.1
C 9 247 83195 395.94 889 893 207.9
C 12 4 7214 30.41 889 893 207.9
C 13 61 6931 29.05 889 893 207.9
D 8 195 262073 1184.62 884 853 220.5
D 2 152 124342 560.02 884 853 220.5
D 2 14 43241 192.23 884 853 220.5

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