ASTROSAT CZTI

Data Quality Report

Orbit 35251

Creation date: 2022-04-05T23:16:36.325522
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_047T09_9000005054_35251cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35251cztM0_level2_quad_clean.evt
Size (bytes)751,495,68069,937,920
Size716.7 MB 66.7 MB
Events in quadrant A3,118,236476,414
Events in quadrant B8,383,592388,130
Events in quadrant C3,108,985467,781
Events in quadrant D7,771,416393,010

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128583
B0287952
C0124882
D0270402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55901322.361360%
B5590204436.565295%
C55901312.343470%
D5590120221.502683%

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 7203 5591 105 105 1.46% 1.88%
B 7202 5590 1528 1528 21.22% 27.33%
C 7203 5591 109 109 1.51% 1.95%
D 7203 5591 1276 1276 17.71% 22.82%

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 7 3 448526 3412.9 648 635 131.2
A 10 83 103527 784.03 648 635 131.2
A 7 191 26984 200.77 648 635 131.2
B 5 236 5409297 50593.66 555 541 106.9
B 5 172 530619 4958.36 555 541 106.9
B 5 200 152794 1424.18 555 541 106.9
C 0 10 377440 2589.59 627 633 145.5
C 15 214 234386 1606.46 627 633 145.5
C 14 67 16026 105.79 627 633 145.5
D 12 227 2515957 17243.14 595 578 145.9
D 8 195 1513315 10369.94 595 578 145.9
D 10 118 563386 3858.1 595 578 145.9

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