ASTROSAT CZTI

Data Quality Report

Orbit 30774

Creation date: 2024-06-27T20:19:27.743584
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/AS1A10_071T12_9000004446_30774cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30774cztM0_level2_quad_clean.evt
Size (bytes)605,897,28065,609,280
Size577.8 MB 62.6 MB
Events in quadrant A3,571,787406,951
Events in quadrant B5,332,197405,627
Events in quadrant C3,959,086379,041
Events in quadrant D5,060,815355,084

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142592
B0196352
C0155752
D0191072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6300600.952381%
B63001512.396825%
C63002674.238095%
D63003495.539683%

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 7655 6300 0 0 0.00% 0.00%
B 7655 6300 1 1 0.01% 0.02%
C 7655 6300 103 103 1.35% 1.63%
D 7655 6301 300 300 3.92% 4.76%

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 0 13 11174 55.9 924 912 183.6
A 13 254 10152 50.33 924 912 183.6
A 3 137 8229 39.86 924 912 183.6
B 6 159 1715971 10143.13 911 894 169.1
B 0 230 25296 144.32 911 894 169.1
B 12 111 20244 114.44 911 894 169.1
C 0 10 418162 2165.49 841 850 192.7
C 14 238 139977 721.95 841 850 192.7
C 3 233 104404 537.36 841 850 192.7
D 8 195 1157843 5477.66 848 831 211.2
D 13 249 406857 1922.25 848 831 211.2
D 10 253 120282 565.52 848 831 211.2

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