ASTROSAT CZTI

Data Quality Report

Orbit 04750

Creation date: 2024-06-27T14:46:20.388566
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/AS1G05_195T01_9000000598_04750cztM0_level2.evt modeM0/AS1G05_195T01_9000000598_04750cztM0_level2_quad_clean.evt
Size (bytes)484,885,44081,622,080
Size462.4 MB 77.8 MB
Events in quadrant A3,193,170496,176
Events in quadrant B3,789,281492,736
Events in quadrant C3,647,735503,562
Events in quadrant D3,567,825480,308

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147333
B0161182
C0157072
D0160442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7168460.641741%
B71681431.994978%
C7168660.920759%
D71681391.939174%

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 9118 7170 1 1 0.01% 0.01%
B 9118 7170 54 54 0.59% 0.75%
C 9118 7170 19 19 0.21% 0.26%
D 9118 7170 94 94 1.03% 1.31%

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 0 50 20039 114.12 820 802 168.6
A 7 16 9711 52.85 820 802 168.6
A 12 194 8383 44.97 820 802 168.6
B 10 16 277313 1737.41 828 808 159.1
B 14 167 147860 923.99 828 808 159.1
B 15 204 56689 351.13 828 808 159.1
C 14 48 492958 2660.33 799 800 185.0
C 9 237 13825 70.41 799 800 185.0
C 12 4 12183 61.53 799 800 185.0
D 13 235 211944 1118.52 788 764 188.8
D 1 31 133834 704.81 788 764 188.8
D 13 239 75115 393.8 788 764 188.8

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