ASTROSAT CZTI

Data Quality Report

Orbit 44460

Creation date: 2024-06-27T23:01:26.639080
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/AS1A13_077T01_9000005984_44460cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44460cztM0_level2_quad_clean.evt
Size (bytes)416,836,80099,711,360
Size397.5 MB 95.1 MB
Events in quadrant A4,176,897673,703
Events in quadrant B2,916,384695,020
Events in quadrant C4,027,389645,711
Events in quadrant D3,852,621593,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177371
B0126521
C0159821
D0154081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58751071.821277%
B58761021.735875%
C58762394.067393%
D58762083.539823%

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 7015 5876 1 1 0.01% 0.02%
B 7016 5877 31 31 0.44% 0.53%
C 7016 5877 202 202 2.88% 3.44%
D 7016 5877 138 138 1.97% 2.35%

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 10 83 1507717 10628.32 685 672 141.8
A 7 3 12543 83.72 685 672 141.8
A 3 137 7507 48.2 685 672 141.8
B 5 172 164512 1228.45 677 658 133.4
B 0 229 58696 435.12 677 658 133.4
B 12 111 16494 118.73 677 658 133.4
C 12 16 1049417 6729.8 660 664 155.8
C 14 254 329697 2111.39 660 664 155.8
C 3 233 41545 262.33 660 664 155.8
D 5 235 342612 2044.39 663 641 167.3
D 1 52 273297 1630.01 663 641 167.3
D 13 249 257445 1535.24 663 641 167.3

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