ASTROSAT CZTI

Data Quality Report

Orbit 03012

Creation date: 2024-06-27T14:23:26.885318
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/AS1G05_238T02_9000000420_03012cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03012cztM0_level2_quad_clean.evt
Size (bytes)444,683,52077,938,560
Size424.1 MB 74.3 MB
Events in quadrant A4,871,090492,849
Events in quadrant B2,551,127510,785
Events in quadrant C2,670,747504,789
Events in quadrant D3,021,389487,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180813
B0111102
C0114582
D0125572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51984809.234321%
B5198581.115814%
C5198290.557907%
D5198891.712197%

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 7324 5199 380 380 5.19% 7.31%
B 7324 5199 45 45 0.61% 0.87%
C 7324 5199 34 34 0.46% 0.65%
D 7324 5199 91 91 1.24% 1.75%

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 50 2439261 21128.93 568 557 115.4
A 14 249 146828 1267.29 568 557 115.4
A 0 230 35754 304.95 568 557 115.4
B 2 249 163414 1447.33 586 573 112.5
B 10 244 37432 327.6 586 573 112.5
B 15 204 25864 224.79 586 573 112.5
C 0 219 269042 2007.62 570 574 133.7
C 1 192 102613 763.05 570 574 133.7
C 6 80 35991 264.85 570 574 133.7
D 7 80 458905 3159.2 561 548 145.1
D 13 114 255056 1754.18 561 548 145.1
D 10 237 64640 441.75 561 548 145.1

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
Veto Counter