ASTROSAT CZTI

Data Quality Report

Orbit 38670

Creation date: 2024-06-27T21:54:55.084270
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/AS1A12_054T01_9000005392_38670cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38670cztM0_level2_quad_clean.evt
Size (bytes)390,744,00096,318,720
Size372.6 MB 91.9 MB
Events in quadrant A3,186,754662,886
Events in quadrant B2,945,204668,126
Events in quadrant C3,101,981632,069
Events in quadrant D4,771,610541,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130173
B0126772
C0128142
D0181972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5891490.831777%
B5891591.001528%
C5891520.882702%
D589162210.558479%

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 7173 5892 36 36 0.50% 0.61%
B 7173 5892 37 37 0.52% 0.63%
C 7173 5892 36 36 0.50% 0.61%
D 7173 5892 540 540 7.53% 9.16%

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 436414 3184.02 667 652 136.9
A 13 248 125976 915.72 667 652 136.9
A 9 143 22718 161.23 667 652 136.9
B 5 200 208783 1617.13 658 640 128.7
B 4 170 53304 409.16 658 640 128.7
B 15 85 42283 323.54 658 640 128.7
C 14 254 275174 1801.59 645 648 152.4
C 15 214 237380 1553.57 645 648 152.4
C 2 16 57707 374.45 645 648 152.4
D 12 227 1638758 10736.71 616 597 152.6
D 10 118 346616 2267.85 616 597 152.6
D 13 249 126461 824.93 616 597 152.6

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