ASTROSAT CZTI

Data Quality Report

Orbit 34927

Creation date: 2022-03-15T01:53:41.416601
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/AS1A11_086T01_9000005002_34927cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34927cztM0_level2_quad_clean.evt
Size (bytes)474,439,68084,988,800
Size452.5 MB 81.1 MB
Events in quadrant A2,620,760574,766
Events in quadrant B4,710,623515,344
Events in quadrant C2,753,763580,947
Events in quadrant D3,933,572541,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112423
B0173282
C0112802
D0154122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5159160.310138%
B515983216.127156%
C5159350.678426%
D5159581.124249%

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 7073 5160 4 4 0.06% 0.08%
B 7073 5160 722 722 10.21% 13.99%
C 7073 5160 20 20 0.28% 0.39%
D 7073 5160 54 54 0.76% 1.05%

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 15 169 139962 1129.87 620 609 123.3
A 10 83 62790 504.16 620 609 123.3
A 13 254 9158 69.31 620 609 123.3
B 5 172 1977395 18272.45 567 552 108.2
B 5 255 458026 4228.55 567 552 108.2
B 0 245 27166 246.0 567 552 108.2
C 15 214 219756 1555.09 614 619 140.9
C 0 10 115447 814.87 614 619 140.9
C 8 111 11481 77.08 614 619 140.9
D 8 195 769258 5223.18 609 594 147.2
D 2 31 490675 3330.17 609 594 147.2
D 1 47 76331 514.64 609 594 147.2

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