ASTROSAT CZTI

Data Quality Report

Orbit 42947

Creation date: 2024-06-27T22:46:08.865909
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/AS1T05_143T01_9000005834_42947cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42947cztM0_level2_quad_clean.evt
Size (bytes)401,832,00098,737,920
Size383.2 MB 94.2 MB
Events in quadrant A3,901,697659,213
Events in quadrant B2,683,074688,112
Events in quadrant C2,927,161646,514
Events in quadrant D4,889,326570,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151792
B0122652
C0124362
D0186832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60831582.597403%
B6084100.164366%
C608440.065746%
D60843605.917160%

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 9126 6085 134 134 1.47% 2.20%
B 9127 6084 2 2 0.02% 0.03%
C 9127 6084 4 4 0.04% 0.07%
D 9127 6084 372 372 4.08% 6.11%

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 10 83 618376 4497.97 664 650 137.3
A 15 237 586485 4265.76 664 650 137.3
A 15 222 111026 803.7 664 650 137.3
B 12 111 16590 123.73 669 650 128.8
B 3 112 15624 116.23 669 650 128.8
B 11 111 15307 113.77 669 650 128.8
C 15 214 268324 1759.46 653 658 152.1
C 0 207 54842 356.17 653 658 152.1
C 14 254 28367 182.14 653 658 152.1
D 12 217 652115 4171.23 640 619 156.2
D 1 47 511628 3271.75 640 619 156.2
D 1 52 472770 3022.96 640 619 156.2

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