ASTROSAT CZTI

Data Quality Report

Orbit 04857

Creation date: 2024-06-27T14:48:03.025163
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/AS1G05_002T01_9000000616_04857cztM0_level2.evt modeM0/AS1G05_002T01_9000000616_04857cztM0_level2_quad_clean.evt
Size (bytes)500,374,08092,698,560
Size477.2 MB 88.4 MB
Events in quadrant A3,442,159572,905
Events in quadrant B3,956,276569,424
Events in quadrant C3,324,341582,209
Events in quadrant D3,917,373556,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01679
B016812
C017014
D017113

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167401131
B0180511148
C0165911160
D0183561352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0151
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75541051.389992%
B75511461.933519%
C7548861.139375%
D75331592.110713%

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 9473 7733 14 14 0.15% 0.18%
B 9464 7737 37 37 0.39% 0.48%
C 9479 7727 1 1 0.01% 0.01%
D 9471 7728 64 64 0.68% 0.83%

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 0 50 83251 465.17 858 837 177.2
A 8 6 21270 115.33 858 837 177.2
A 8 15 13653 72.34 858 837 177.2
B 10 16 532149 3161.36 867 846 168.1
B 15 204 22715 130.12 867 846 168.1
B 4 80 18226 103.41 867 846 168.1
C 12 4 33917 169.08 839 842 195.6
C 9 247 9298 43.23 839 842 195.6
C 13 61 6837 30.65 839 842 195.6
D 1 31 227410 1112.91 831 804 203.6
D 13 235 206927 1012.31 831 804 203.6
D 2 136 173075 846.06 831 804 203.6

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