ASTROSAT CZTI

Data Quality Report

Orbit 46342

Creation date: 2024-06-27T23:21:58.266942
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_070T05_9000006198_46342cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46342cztM0_level2_quad_clean.evt
Size (bytes)598,086,720105,042,240
Size570.4 MB 100.2 MB
Events in quadrant A10,439,875550,224
Events in quadrant B4,292,214763,694
Events in quadrant C3,261,959737,124
Events in quadrant D3,637,416673,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355552
B0170552
C0142042
D0152562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6548208631.857056%
B65483084.703726%
C65481021.557728%
D65481532.336591%

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 7663 6549 1476 1476 19.26% 22.54%
B 7663 6549 163 163 2.13% 2.49%
C 7663 6549 39 39 0.51% 0.60%
D 7663 6549 77 77 1.00% 1.18%

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 5017055 36389.15 666 652 137.9
A 10 83 2810371 20381.79 666 652 137.9
A 13 248 18130 126.79 666 652 137.9
B 3 112 721416 4829.94 760 738 149.2
B 5 172 476288 3187.11 760 738 149.2
B 5 32 31574 206.66 760 738 149.2
C 12 2 144528 816.63 751 754 176.1
C 12 250 110726 624.64 751 754 176.1
C 2 14 32429 179.91 751 754 176.1
D 13 249 216314 1139.63 755 732 189.2
D 11 224 208752 1099.66 755 732 189.2
D 5 235 85982 450.66 755 732 189.2

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