ASTROSAT CZTI

Data Quality Report

Orbit 06250

Creation date: 2024-06-27T15:04:43.568575
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_151T01_9000000818_06250cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06250cztM0_level2_quad_clean.evt
Size (bytes)459,705,60068,909,760
Size438.4 MB 65.7 MB
Events in quadrant A3,274,228407,334
Events in quadrant B3,357,213408,394
Events in quadrant C3,112,870409,686
Events in quadrant D3,723,652395,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143543
B0144012
C0138962
D0154172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66801342.005988%
B66801792.679641%
C66801001.497006%
D66801522.275449%

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 8790 6680 0 0 0.00% 0.00%
B 8790 6680 23 23 0.26% 0.34%
C 8790 6680 0 0 0.00% 0.00%
D 8790 6680 29 29 0.33% 0.43%

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 144394 877.05 811 795 163.7
A 8 15 9149 51.02 811 795 163.7
A 0 226 7776 42.64 811 795 163.7
B 3 64 137331 887.83 811 793 153.8
B 0 219 42519 271.32 811 793 153.8
B 12 111 15707 96.98 811 793 153.8
C 13 61 6185 29.5 796 800 182.5
C 14 67 3211 13.21 796 800 182.5
C 8 222 2377 8.64 796 800 182.5
D 12 220 233850 1201.04 794 768 194.1
D 2 63 208215 1068.94 794 768 194.1
D 2 152 130988 671.0 794 768 194.1

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