ASTROSAT CZTI

Data Quality Report

Orbit 19847

Creation date: 2024-06-27T18:07:51.253907
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/AS1T03_118T01_9000002962_19847cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19847cztM0_level2_quad_clean.evt
Size (bytes)695,203,20092,070,720
Size663.0 MB 87.8 MB
Events in quadrant A10,476,018530,075
Events in quadrant B3,351,482618,677
Events in quadrant C3,386,998590,902
Events in quadrant D3,382,185576,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358782
B0142222
C0142062
D0146362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6757263939.055794%
B6757771.139559%
C6757931.376350%
D6757470.695575%

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 7637 6758 2160 2160 28.28% 31.96%
B 7637 6758 0 0 0.00% 0.00%
C 7637 6758 0 0 0.00% 0.00%
D 7637 6758 11 11 0.14% 0.16%

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 14 238 7496020 53635.04 691 677 139.7
A 14 254 315029 2249.43 691 677 139.7
A 5 16 8972 59.36 691 677 139.7
B 0 214 20061 119.14 842 820 161.5
B 12 111 19463 115.44 842 820 161.5
B 11 111 17404 102.69 842 820 161.5
C 14 238 125493 647.28 817 823 192.6
C 9 221 67771 347.59 817 823 192.6
C 3 233 7782 36.13 817 823 192.6
D 1 52 229682 1132.08 825 803 202.2
D 7 96 38291 185.42 825 803 202.2
D 2 234 25762 123.45 825 803 202.2

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