ASTROSAT CZTI

Data Quality Report

Orbit 12494

Creation date: 2024-06-27T16:28:11.521735
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_174T01_9000001850_12494cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12494cztM0_level2_quad_clean.evt
Size (bytes)504,178,56076,849,920
Size480.8 MB 73.3 MB
Events in quadrant A3,909,842461,398
Events in quadrant B3,617,570470,536
Events in quadrant C3,321,105468,174
Events in quadrant D3,940,701434,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161742
B0151211
C0145501
D0163571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7064991.401472%
B70641171.656285%
C7064310.438845%
D70641712.420725%

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 7705 7066 0 0 0.00% 0.00%
B 7705 7066 26 26 0.34% 0.37%
C 7705 7065 2 2 0.03% 0.03%
D 7705 7066 126 126 1.64% 1.78%

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 1 162 145185 820.33 858 841 176.0
A 12 189 140108 791.48 858 841 176.0
A 1 178 82431 463.69 858 841 176.0
B 4 239 107999 646.44 864 844 165.8
B 0 214 51519 305.71 864 844 165.8
B 0 197 31407 184.38 864 844 165.8
C 15 208 36591 184.24 839 846 194.0
C 14 234 11825 56.59 839 846 194.0
C 13 61 6029 26.72 839 846 194.0
D 1 52 527805 2666.77 820 799 197.6
D 7 80 108755 546.28 820 799 197.6
D 13 249 50851 253.27 820 799 197.6

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