ASTROSAT CZTI

Data Quality Report

Orbit 36394

Creation date: 2022-06-22T03:12:20.804998
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/AS1T04_084T01_9000005198_36394cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36394cztM0_level2_quad_clean.evt
Size (bytes)411,361,92077,817,600
Size392.3 MB 74.2 MB
Events in quadrant A2,889,889509,366
Events in quadrant B3,705,673502,511
Events in quadrant C2,694,159504,569
Events in quadrant D2,824,478485,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118633
B0143092
C0108642
D0117562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5060741.462451%
B50602945.810277%
C5060661.304348%
D5060490.968379%

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 6973 5061 41 41 0.59% 0.81%
B 6973 5061 185 185 2.65% 3.66%
C 6973 5061 52 52 0.75% 1.03%
D 6973 5061 57 57 0.82% 1.13%

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 15 223 413327 3470.02 590 578 118.9
A 10 83 178266 1493.84 590 578 118.9
A 13 254 8898 69.95 590 578 118.9
B 5 172 685343 6146.69 578 564 111.4
B 8 128 169495 1516.35 578 564 111.4
B 4 171 151788 1357.41 578 564 111.4
C 15 214 218391 1606.93 579 584 135.5
C 0 10 207978 1530.11 579 584 135.5
C 0 207 10000 69.47 579 584 135.5
D 12 6 325428 2300.29 579 566 141.2
D 2 249 88599 623.34 579 566 141.2
D 10 118 40929 285.8 579 566 141.2

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