ASTROSAT CZTI

Data Quality Report

Orbit 42318

Creation date: 2024-06-27T22:38:11.305551
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/AS1P01_999T99_9000005772_42318cztM0_level2.fits modeM0/AS1P01_999T99_9000005772_42318cztM0_level2_quad_clean.evt
Size (bytes)304,332,48088,272,000
Size290.2 MB 84.2 MB
Events in quadrant A3,014,787586,338
Events in quadrant B2,501,216594,983
Events in quadrant C2,390,157583,609
Events in quadrant D2,941,582532,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124282
B0114642
C0107372
D0126092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5355310.578898%
B5355500.933707%
C535530.056022%
D53551342.502334%

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 7148 5356 14 14 0.20% 0.26%
B 7148 5356 33 33 0.46% 0.62%
C 7148 5356 0 0 0.00% 0.00%
D 7148 5356 122 122 1.71% 2.28%

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 546002 4795.54 557 545 113.7
A 15 223 254963 2236.79 557 545 113.7
A 15 252 38196 331.02 557 545 113.7
B 5 172 157863 1457.54 556 539 107.9
B 3 112 74844 688.4 556 539 107.9
B 15 35 31869 290.25 556 539 107.9
C 15 214 224114 1735.41 554 558 128.8
C 12 249 4340 29.36 554 558 128.8
C 13 61 3699 24.38 554 558 128.8
D 12 6 260515 1956.57 544 529 132.9
D 2 249 191494 1437.14 544 529 132.9
D 13 249 166361 1248.0 544 529 132.9

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