ASTROSAT CZTI

Data Quality Report

Orbit 49856

Creation date: 2024-12-16T14:54:29.088452
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/AS1A13_037T01_9000006440_49856cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49856cztM0_level2_quad_clean.evt
Size (bytes)920,635,20060,215,040
Size878.0 MB 57.4 MB
Events in quadrant A6,276,611581,746
Events in quadrant B3,674,400663,779
Events in quadrant C11,235,74452,897
Events in quadrant D12,405,86382,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229780
B0152470
C0377300
D0411760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A624675912.151777%
B62462784.450849%
C62466246100.000000%
D6247624599.967985%

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 7271 6246 567 567 7.80% 9.08%
B 7271 6246 96 96 1.32% 1.54%
C 7270 6245 2192 2192 30.15% 35.10%
D 7271 6246 2731 2731 37.56% 43.72%

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 3 84 1849868 11289.82 666 649 163.8
A 4 4 306251 1865.76 666 649 163.8
A 8 38 258858 1576.41 666 649 163.8
B 4 206 437822 3021.83 686 665 144.7
B 4 190 143387 986.56 686 665 144.7
B 10 28 125419 862.36 686 665 144.7
C 15 230 3274389 85003.04 75 72 38.5
C 15 189 2122893 55109.58 75 72 38.5
C 4 111 1426569 37032.63 75 72 38.5
D 7 61 6524837 152507.98 115 108 42.8
D 8 129 2198853 51393.12 115 108 42.8
D 15 185 894007 20893.85 115 108 42.8

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