ASTROSAT CZTI

Data Quality Report

Orbit 26180

Creation date: 2024-06-27T19:25:45.606198
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/AS1A09_012T01_9000003778_26180cztM0_level2.evt modeM0/AS1A09_012T01_9000003778_26180cztM0_level2_quad_clean.evt
Size (bytes)496,543,680129,715,200
Size473.5 MB 123.7 MB
Events in quadrant A3,098,519878,365
Events in quadrant B3,253,523892,158
Events in quadrant C3,278,677863,562
Events in quadrant D4,955,852831,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135420
B0139940
C0139010
D0191670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6647150.225666%
B6647370.556642%
C6647821.233639%
D66472914.377915%

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 7662 6648 0 0 0.00% 0.00%
B 7662 6648 1 1 0.01% 0.02%
C 7662 6648 9 9 0.12% 0.14%
D 7662 6648 257 257 3.35% 3.87%

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 11327 65.42 799 782 161.2
A 3 137 7358 40.8 799 782 161.2
A 0 226 6738 36.95 799 782 161.2
B 0 190 66675 432.67 802 783 152.3
B 5 172 22160 140.37 802 783 152.3
B 12 111 18493 116.29 802 783 152.3
C 14 238 126887 696.17 775 779 181.1
C 2 16 80495 440.07 775 779 181.1
C 3 233 42914 232.6 775 779 181.1
D 1 52 1870067 10169.38 766 747 183.8
D 12 233 149081 806.96 766 747 183.8
D 2 234 31803 168.95 766 747 183.8

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