ASTROSAT CZTI

Data Quality Report

Orbit 17945

Creation date: 2024-06-27T17:42:55.835700
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_025T01_9000002670_17945cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17945cztM0_level2_quad_clean.evt
Size (bytes)451,739,52082,802,880
Size430.8 MB 79.0 MB
Events in quadrant A3,303,195524,163
Events in quadrant B3,246,478533,079
Events in quadrant C3,199,382499,721
Events in quadrant D3,490,421497,398

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141141
B0137871
C0135141
D0148071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500721.107692%
B6501731.122904%
C6501821.261344%
D65011291.984310%

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 7570 6500 5 5 0.07% 0.08%
B 7571 6501 7 7 0.09% 0.11%
C 7571 6502 0 0 0.00% 0.00%
D 7571 6501 63 63 0.83% 0.97%

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 15 174 201246 1234.76 807 790 162.3
A 0 226 6907 37.68 807 790 162.3
A 3 137 5963 31.86 807 790 162.3
B 0 197 44525 288.98 803 783 151.4
B 10 247 20834 132.47 803 783 151.4
B 12 111 17597 111.08 803 783 151.4
C 14 238 118498 654.88 770 775 179.8
C 5 218 61387 337.18 770 775 179.8
C 3 233 12835 67.09 770 775 179.8
D 5 222 347493 1812.72 782 757 191.3
D 7 238 73187 378.66 782 757 191.3
D 9 64 33175 169.48 782 757 191.3

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