ASTROSAT CZTI

Data Quality Report

Orbit 06946

Creation date: 2024-06-27T15:13:31.577164
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/AS1A02_103T01_9000000950_06946cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06946cztM0_level2_quad_clean.evt
Size (bytes)683,619,84073,200,960
Size652.0 MB 69.8 MB
Events in quadrant A3,334,968455,077
Events in quadrant B3,766,716456,134
Events in quadrant C9,079,133410,506
Events in quadrant D4,075,957433,862

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139383
B0151902
C0316092
D0166192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6604861.302241%
B66041792.710478%
C6604209631.738340%
D66041031.559661%

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 7849 6605 0 0 0.00% 0.00%
B 7849 6605 52 52 0.66% 0.79%
C 7849 6605 1478 1478 18.83% 22.38%
D 7849 6605 23 23 0.29% 0.35%

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 14 111 8687 45.01 862 846 174.2
A 0 226 8391 43.31 862 846 174.2
A 12 194 8005 41.09 862 846 174.2
B 0 228 226103 1405.59 852 835 160.3
B 3 220 144790 898.22 852 835 160.3
B 0 219 57568 353.99 852 835 160.3
C 9 247 5985752 34723.83 756 763 172.4
C 7 247 134155 773.92 756 763 172.4
C 12 4 7182 37.24 756 763 172.4
D 8 195 575115 2827.2 837 812 203.1
D 2 152 120053 587.0 837 812 203.1
D 7 55 61249 297.52 837 812 203.1

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