ASTROSAT CZTI

Data Quality Report

Orbit 47808

Creation date: 2024-08-01T10:51:29.250505
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/AS1A13_037T05_9000006352_47808cztM0_level2.fits modeM0/AS1A13_037T05_9000006352_47808cztM0_level2_quad_clean.evt
Size (bytes)493,701,120105,710,400
Size470.8 MB 100.8 MB
Events in quadrant A6,530,915719,069
Events in quadrant B3,076,330757,980
Events in quadrant C2,843,738716,262
Events in quadrant D5,338,839570,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238691
B0130241
C0127811
D0202511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62551953.117506%
B6256600.959079%
C6256290.463555%
D625684013.427110%

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 7455 6255 60 60 0.80% 0.96%
B 7456 6257 5 5 0.07% 0.08%
C 7456 6257 0 0 0.00% 0.00%
D 7456 6256 726 726 9.74% 11.60%

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 3564338 23841.71 721 707 149.5
A 0 31 174995 1166.04 721 707 149.5
A 13 248 8258 50.52 721 707 149.5
B 0 155 45211 313.86 732 709 141.8
B 5 255 44148 306.37 732 709 141.8
B 0 200 36055 249.29 732 709 141.8
C 12 2 14273 80.33 722 725 168.6
C 6 247 6038 31.5 722 725 168.6
C 14 254 5886 30.6 722 725 168.6
D 12 2 1458597 8660.92 672 652 168.3
D 2 165 638267 3787.75 672 652 168.3
D 2 37 249477 1478.14 672 652 168.3

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