ASTROSAT CZTI

Data Quality Report

Orbit 11042

Creation date: 2024-06-27T16:07:22.033540
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/AS1A04_113T02_9000001606_11042cztM0_level2.evt modeM0/AS1A04_113T02_9000001606_11042cztM0_level2_quad_clean.evt
Size (bytes)693,184,32076,861,440
Size661.1 MB 73.3 MB
Events in quadrant A8,469,841398,740
Events in quadrant B4,087,529505,208
Events in quadrant C3,070,183513,124
Events in quadrant D4,941,091471,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295103
B0160432
C0130762
D0189692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281186129.629040%
B62812363.757363%
C628170.111447%
D62812844.521573%

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 7581 6282 1606 1606 21.18% 25.57%
B 7581 6282 146 146 1.93% 2.32%
C 7581 6282 0 0 0.00% 0.00%
D 7581 6282 271 271 3.57% 4.31%

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 8 5 4755045 34685.46 679 666 137.1
A 14 238 1078106 7860.44 679 666 137.1
A 0 12 14986 104.47 679 666 137.1
B 4 239 887718 6039.32 788 769 146.9
B 4 81 37758 251.86 788 769 146.9
B 0 187 35960 239.62 788 769 146.9
C 13 61 5660 27.18 786 794 179.0
C 12 4 4939 23.15 786 794 179.0
C 3 202 2115 7.38 786 794 179.0
D 14 34 494733 2758.9 757 738 179.1
D 1 52 467886 2608.97 757 738 179.1
D 11 129 323190 1800.86 757 738 179.1

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