ASTROSAT CZTI

Data Quality Report

Orbit 34046

Creation date: 2024-06-27T20:55:50.265791
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/AS1A06_003T04_9000004866_34046cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34046cztM0_level2_quad_clean.evt
Size (bytes)737,735,04060,566,400
Size703.6 MB 57.8 MB
Events in quadrant A5,145,196382,177
Events in quadrant B9,588,893298,166
Events in quadrant C3,291,324409,091
Events in quadrant D3,977,879390,321

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186653
B0319552
C0130822
D0154152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503369413.788993%
B5033302560.103318%
C5033801.589509%
D50331663.298232%

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 7155 5034 656 656 9.17% 13.03%
B 7155 5033 2782 2782 38.88% 55.28%
C 7155 5034 70 70 0.98% 1.39%
D 7155 5034 156 156 2.18% 3.10%

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 2601845 20126.62 653 643 129.2
A 10 83 19019 142.18 653 643 129.2
A 13 254 8279 59.08 653 643 129.2
B 5 31 4170799 42461.0 531 521 98.2
B 5 15 2031117 20675.15 531 521 98.2
B 5 172 773731 7872.68 531 521 98.2
C 0 10 260956 1797.53 639 647 144.8
C 15 214 238976 1645.75 639 647 144.8
C 3 233 220574 1518.68 639 647 144.8
D 8 195 514780 3096.91 637 624 166.0
D 2 249 365986 2200.68 637 624 166.0
D 13 249 111660 668.8 637 624 166.0

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