ASTROSAT CZTI

Data Quality Report

Orbit 37027

Creation date: 2024-06-27T21:34:28.213805
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_046T01_9000005266_37027cztM0_level2.evt modeM0/AS1T05_046T01_9000005266_37027cztM0_level2_quad_clean.evt
Size (bytes)496,356,48069,531,840
Size473.4 MB 66.3 MB
Events in quadrant A2,639,886467,243
Events in quadrant B4,694,383425,007
Events in quadrant C3,076,287436,989
Events in quadrant D4,279,345421,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109002
B0172061
C0122211
D0161721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5054100.197863%
B505460211.911357%
C50541322.611793%
D50542424.788287%

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 7026 5055 4 4 0.06% 0.08%
B 7026 5055 516 516 7.34% 10.21%
C 7026 5055 117 117 1.67% 2.31%
D 7026 5055 218 218 3.10% 4.31%

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 10 83 196248 1562.74 624 615 125.2
A 9 143 17548 135.26 624 615 125.2
A 13 6 13145 100.09 624 615 125.2
B 5 184 2031672 18155.92 587 573 111.9
B 5 172 229341 2044.95 587 573 111.9
B 4 81 23426 204.28 587 573 111.9
C 1 23 237606 1756.83 583 587 134.9
C 15 214 214244 1583.67 583 587 134.9
C 0 10 118212 871.86 583 587 134.9
D 12 235 775559 5420.23 588 573 143.0
D 2 250 443398 3097.11 588 573 143.0
D 2 153 261420 1824.36 588 573 143.0

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