ASTROSAT CZTI

Data Quality Report

Orbit 12891

Creation date: 2024-06-27T16:33:37.245614
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/AS1C03_001T01_9000001894_12891cztM0_level2.evt modeM0/AS1C03_001T01_9000001894_12891cztM0_level2_quad_clean.evt
Size (bytes)545,463,360120,499,200
Size520.2 MB 114.9 MB
Events in quadrant A3,383,728822,307
Events in quadrant B5,869,125735,942
Events in quadrant C2,963,090829,583
Events in quadrant D3,840,541786,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145673
B0220142
C0137702
D0163052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6809680.998678%
B6809123218.093700%
C680960.088119%
D68091482.173594%

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 7780 6811 36 36 0.46% 0.53%
B 7780 6810 748 748 9.61% 10.98%
C 7780 6811 1 1 0.01% 0.01%
D 7780 6811 120 120 1.54% 1.76%

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 15 174 159869 1015.72 776 758 156.6
A 1 162 99055 627.5 776 758 156.6
A 1 178 51050 321.05 776 758 156.6
B 4 239 2890382 21847.39 696 677 132.3
B 4 173 101442 761.83 696 677 132.3
B 0 214 37237 276.41 696 677 132.3
C 13 61 5494 26.88 758 762 176.1
C 14 234 4932 23.68 758 762 176.1
C 4 112 1973 6.88 758 762 176.1
D 1 52 835655 4663.31 743 721 179.0
D 4 95 70888 391.9 743 721 179.0
D 14 35 48169 265.01 743 721 179.0

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