ASTROSAT CZTI

Data Quality Report

Orbit 37139

Creation date: 2024-06-27T21:36:04.726283
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_079T01_9000005284_37139cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37139cztM0_level2_quad_clean.evt
Size (bytes)403,390,08052,945,920
Size384.7 MB 50.5 MB
Events in quadrant A2,787,226308,396
Events in quadrant B3,130,370310,848
Events in quadrant C3,091,404306,232
Events in quadrant D2,834,676293,425

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115723
B0129152
C0124032
D0121002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5485220.401094%
B54851673.044667%
C5485661.203282%
D5485480.875114%

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 7097 5486 15 15 0.21% 0.27%
B 7097 5486 117 117 1.65% 2.13%
C 7097 5486 57 57 0.80% 1.04%
D 7097 5486 49 49 0.69% 0.89%

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 258441 2008.83 630 617 128.3
A 15 174 73157 565.19 630 617 128.3
A 13 6 10829 79.57 630 617 128.3
B 5 172 595467 4919.43 619 600 120.9
B 4 232 77974 639.87 619 600 120.9
B 12 111 15095 119.87 619 600 120.9
C 14 254 314603 2173.4 610 614 144.5
C 15 214 255421 1763.75 610 614 144.5
C 0 10 118799 818.07 610 614 144.5
D 2 250 149664 994.93 611 594 149.8
D 2 249 71507 473.29 611 594 149.8
D 7 55 58669 387.61 611 594 149.8

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