ASTROSAT CZTI

Data Quality Report

Orbit 03477

Creation date: 2024-06-27T14:29:54.823213
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_245T01_9000000460_03477cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03477cztM0_level2_quad_clean.evt
Size (bytes)541,512,00083,373,120
Size516.4 MB 79.5 MB
Events in quadrant A4,560,127499,205
Events in quadrant B3,957,456510,107
Events in quadrant C4,174,531508,524
Events in quadrant D3,211,536497,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186524
B0166443
C0177153
D0152583

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73121592.174508%
B73121151.572757%
C73121772.420678%
D7312280.382932%

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 8592 7315 96 96 1.12% 1.31%
B 8592 7315 30 30 0.35% 0.41%
C 8592 7315 128 128 1.49% 1.75%
D 8592 7315 13 13 0.15% 0.18%

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 0 118 919931 5448.22 817 796 168.7
A 0 50 315068 1862.86 817 796 168.7
A 0 226 91140 535.52 817 796 168.7
B 2 249 271217 1661.97 836 814 162.7
B 15 204 253098 1550.61 836 814 162.7
B 3 0 108236 660.24 836 814 162.7
C 7 220 927162 4912.2 806 811 188.6
C 6 80 72614 380.75 806 811 188.6
C 1 192 11696 57.72 806 811 188.6
D 2 31 34200 172.73 802 778 193.5
D 13 223 31274 157.61 802 778 193.5
D 13 239 28190 141.67 802 778 193.5

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
Veto Counter