ASTROSAT CZTI

Data Quality Report

Orbit 15948

Creation date: 2024-06-27T17:15:33.383174
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/AS1G08_081T01_9000002350_15948cztM0_level2.evt modeM0/AS1G08_081T01_9000002350_15948cztM0_level2_quad_clean.evt
Size (bytes)415,912,320104,797,440
Size396.6 MB 99.9 MB
Events in quadrant A3,052,209701,556
Events in quadrant B3,138,681708,296
Events in quadrant C3,039,446673,552
Events in quadrant D2,950,651664,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131112
B0132091
C0129371
D0128801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6102530.868568%
B6102590.966896%
C6102761.245493%
D6102410.671911%

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 7303 6103 2 2 0.03% 0.03%
B 7303 6103 5 5 0.07% 0.08%
C 7303 6103 0 0 0.00% 0.00%
D 7303 6103 4 4 0.05% 0.07%

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 15 239 34613 215.58 777 760 157.0
A 13 210 25877 159.95 777 760 157.0
A 0 226 6837 38.7 777 760 157.0
B 0 189 55646 379.2 768 750 144.8
B 4 173 22969 153.48 768 750 144.8
B 12 111 16702 110.19 768 750 144.8
C 14 238 115210 666.21 743 748 171.8
C 0 207 15328 84.86 743 748 171.8
C 3 233 11721 63.87 743 748 171.8
D 2 234 30603 162.19 758 739 184.1
D 2 152 26910 142.13 758 739 184.1
D 4 239 22735 119.46 758 739 184.1

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