ASTROSAT CZTI

Data Quality Report

Orbit 08766

Creation date: 2024-06-27T15:36:54.881808
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/AS1A03_038T01_9000001218_08766cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08766cztM0_level2_quad_clean.evt
Size (bytes)631,221,12071,997,120
Size602.0 MB 68.7 MB
Events in quadrant A3,331,803450,969
Events in quadrant B3,250,550457,257
Events in quadrant C3,226,928451,316
Events in quadrant D8,844,515343,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01429711
B01407016
C01419011
D03092726

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68251502.197802%
B68231422.081196%
C68251051.538462%
D6824188527.623095%

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 8578 6828 7 7 0.08% 0.10%
B 8578 6825 0 0 0.00% 0.00%
C 8578 6827 6 6 0.07% 0.09%
D 8578 6826 1697 1697 19.78% 24.86%

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 13 251 50100 284.89 840 821 173.0
A 8 5 26467 148.26 840 821 173.0
A 5 16 22641 126.14 840 821 173.0
B 12 111 18525 108.67 837 816 163.0
B 11 111 15070 87.47 837 816 163.0
B 14 111 11484 65.46 837 816 163.0
C 9 68 49036 254.62 812 815 189.4
C 13 61 6025 27.51 812 815 189.4
C 9 54 5722 25.91 812 815 189.4
D 2 16 5822364 32097.79 707 689 181.4
D 1 52 196273 1078.35 707 689 181.4
D 2 152 59884 326.37 707 689 181.4

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