ASTROSAT CZTI

Data Quality Report

Orbit 12735

Creation date: 2024-06-27T16:31:45.407032
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/AS1G08_021T01_9000001880_12735cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12735cztM0_level2_quad_clean.evt
Size (bytes)576,964,80083,592,000
Size550.2 MB 79.7 MB
Events in quadrant A3,350,652538,688
Events in quadrant B5,355,128491,869
Events in quadrant C3,182,590533,036
Events in quadrant D5,134,305503,845

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142963
B0203072
C0139952
D0198722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6652861.292844%
B665277011.575466%
C6652711.067348%
D66525187.787132%

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 7839 6655 0 0 0.00% 0.00%
B 7839 6655 602 602 7.68% 9.05%
C 7839 6655 0 0 0.00% 0.00%
D 7839 6655 404 404 5.15% 6.07%

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 12 189 38849 227.37 845 829 167.2
A 15 239 35018 204.46 845 829 167.2
A 8 15 22538 129.83 845 829 167.2
B 4 239 2052045 13809.39 798 780 148.5
B 0 219 38112 251.32 798 780 148.5
B 0 214 34183 224.87 798 780 148.5
C 15 208 14729 75.75 812 818 183.7
C 13 61 6020 28.33 812 818 183.7
C 3 202 2060 6.76 812 818 183.7
D 1 52 1690718 9166.79 788 768 184.4
D 10 199 391612 2120.05 788 768 184.4
D 2 136 41701 222.03 788 768 184.4

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