ASTROSAT CZTI

Data Quality Report

Orbit 15281

Creation date: 2024-06-27T17:06:35.010770
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_037T01_9000002256_15281cztM0_level2.evt modeM0/AS1G08_037T01_9000002256_15281cztM0_level2_quad_clean.evt
Size (bytes)439,902,720102,038,400
Size419.5 MB 97.3 MB
Events in quadrant A3,143,402680,372
Events in quadrant B3,593,278679,925
Events in quadrant C3,141,945663,802
Events in quadrant D3,030,598641,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132382
B0146171
C0130191
D0130251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6080711.167763%
B60801322.171053%
C6080540.888158%
D6080701.151316%

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 7196 6081 0 0 0.00% 0.00%
B 7196 6081 45 45 0.63% 0.74%
C 7196 6081 1 1 0.01% 0.02%
D 7196 6081 11 11 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 12 189 69556 440.78 782 769 156.1
A 12 30 31391 196.22 782 769 156.1
A 9 143 25062 155.67 782 769 156.1
B 10 16 280637 1895.93 768 751 147.6
B 4 142 94191 632.96 768 751 147.6
B 0 205 52493 350.5 768 751 147.6
C 3 233 201680 1167.88 746 751 172.0
C 7 247 26800 151.41 746 751 172.0
C 13 61 5342 26.68 746 751 172.0
D 5 222 55193 295.94 756 735 184.0
D 2 33 32144 170.69 756 735 184.0
D 2 234 22587 118.75 756 735 184.0

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