ASTROSAT CZTI

Data Quality Report

Orbit 08337

Creation date: 2024-06-27T15:31:17.253257
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/AS1G07_029T01_9000001158_08337cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08337cztM0_level2_quad_clean.evt
Size (bytes)486,760,32065,111,040
Size464.2 MB 62.1 MB
Events in quadrant A3,163,755391,869
Events in quadrant B4,468,535396,041
Events in quadrant C3,059,686384,452
Events in quadrant D3,633,268370,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01305234
B01688927
C01281317
D01474461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6134821.336811%
B613966410.816094%
C6138240.391007%
D6126490.799869%

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 7489 6142 0 0 0.00% 0.00%
B 7489 6144 580 580 7.74% 9.44%
C 7489 6145 0 0 0.00% 0.00%
D 7489 6142 18 18 0.24% 0.29%

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 14 111 27345 161.7 814 799 164.2
A 0 226 7698 42.02 814 799 164.2
A 12 194 7062 38.15 814 799 164.2
B 4 81 1449545 10149.14 760 744 142.8
B 0 214 48662 335.68 760 744 142.8
B 12 111 15786 105.37 760 744 142.8
C 9 54 20378 109.06 779 786 179.6
C 13 61 5966 28.84 779 786 179.6
C 3 202 1936 6.4 779 786 179.6
D 2 152 293780 1581.67 772 753 185.3
D 12 221 226874 1220.53 772 753 185.3
D 2 136 85035 454.93 772 753 185.3

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