ASTROSAT CZTI

Data Quality Report

Orbit 29819

Creation date: 2024-06-27T20:08:01.655026
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/AS1T03_291T01_9000004278_29819cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29819cztM0_level2_quad_clean.evt
Size (bytes)502,617,60084,790,080
Size479.3 MB 80.9 MB
Events in quadrant A3,214,356564,388
Events in quadrant B5,039,960559,820
Events in quadrant C3,166,785521,282
Events in quadrant D3,404,705513,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131461
B0186711
C0128431
D0139761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5846981.676360%
B58461763.010606%
C58461462.497434%
D5847761.299812%

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 7156 5847 0 0 0.00% 0.00%
B 7156 5847 1 1 0.01% 0.02%
C 7156 5847 0 0 0.00% 0.00%
D 7157 5848 14 14 0.20% 0.24%

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 13 27121 163.0 825 815 161.4
A 13 254 11590 66.76 825 815 161.4
A 3 137 7214 39.65 825 815 161.4
B 6 159 1800988 12130.28 813 798 148.4
B 0 190 28358 185.71 813 798 148.4
B 12 111 17096 109.82 813 798 148.4
C 14 238 129875 741.77 766 772 174.0
C 3 233 30708 172.0 766 772 174.0
C 2 114 14480 78.76 766 772 174.0
D 8 195 360866 2003.4 777 758 179.7
D 12 79 46573 254.88 777 758 179.7
D 2 234 25996 140.4 777 758 179.7

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