ASTROSAT CZTI

Data Quality Report

Orbit 24898

Creation date: 2024-06-27T19:11:11.683587
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/AS1A08_003T13_9000003646_24898cztM0_level2.evt modeM0/AS1A08_003T13_9000003646_24898cztM0_level2_quad_clean.evt
Size (bytes)475,571,52067,512,960
Size453.5 MB 64.4 MB
Events in quadrant A3,285,195412,721
Events in quadrant B3,376,897421,907
Events in quadrant C3,451,050391,595
Events in quadrant D3,862,903379,104

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132502
B0135012
C0137592
D0155312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6285570.906921%
B6285831.320605%
C62841292.052833%
D6284500.795672%

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 7490 6286 0 0 0.00% 0.00%
B 7490 6286 1 1 0.01% 0.02%
C 7489 6285 13 13 0.17% 0.21%
D 7489 6285 12 12 0.16% 0.19%

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 13 254 8992 47.75 852 836 170.8
A 3 137 7563 39.39 852 836 170.8
A 0 226 7172 37.1 852 836 170.8
B 0 190 31089 187.44 849 827 161.5
B 12 111 19470 115.47 849 827 161.5
B 11 111 17539 103.51 849 827 161.5
C 2 16 129861 694.68 799 807 185.8
C 14 238 129395 692.17 799 807 185.8
C 0 10 43123 227.78 799 807 185.8
D 8 195 458152 2323.0 809 789 196.9
D 1 52 314611 1593.94 809 789 196.9
D 7 238 31811 157.56 809 789 196.9

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