ASTROSAT CZTI

Data Quality Report

Orbit 18316

Creation date: 2024-06-27T17:48:15.674124
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_006T01_9000002720_18316cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18316cztM0_level2_quad_clean.evt
Size (bytes)405,864,00061,966,080
Size387.1 MB 59.1 MB
Events in quadrant A2,481,493384,919
Events in quadrant B2,631,803385,354
Events in quadrant C2,475,126376,945
Events in quadrant D4,338,720353,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109940
B0112600
C0109562
D0163600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5366190.354081%
B5367340.633501%
C5366380.708163%
D53662304.286247%

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 5831 5367 1 1 0.02% 0.02%
B 5832 5368 5 5 0.09% 0.09%
C 5832 5368 0 0 0.00% 0.00%
D 5832 5368 258 258 4.42% 4.81%

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 15 174 37166 277.86 636 622 131.5
A 0 226 5553 37.49 636 622 131.5
A 3 137 4728 31.22 636 622 131.5
B 15 35 49159 393.16 636 620 123.5
B 4 216 28740 227.77 636 620 123.5
B 7 220 23108 182.15 636 620 123.5
C 14 238 93041 640.4 609 614 144.3
C 0 207 5299 32.46 609 614 144.3
C 13 61 4311 25.62 609 614 144.3
D 7 238 1511069 9990.07 608 587 151.2
D 13 168 310786 2051.6 608 587 151.2
D 1 52 72637 476.53 608 587 151.2

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