ASTROSAT CZTI

Data Quality Report

Orbit 38739

Creation date: 2024-06-27T21:55:49.019832
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_38739cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38739cztM0_level2_quad_clean.evt
Size (bytes)416,877,12086,829,120
Size397.6 MB 82.8 MB
Events in quadrant A4,367,516551,704
Events in quadrant B3,098,818599,760
Events in quadrant C2,546,644585,173
Events in quadrant D5,016,714530,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163123
B0126092
C0107362
D0185132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517055710.773694%
B51702274.390716%
C5170180.348162%
D51701893.655706%

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 7263 5171 410 410 5.65% 7.93%
B 7263 5171 167 167 2.30% 3.23%
C 7263 5171 20 20 0.28% 0.39%
D 7263 5171 174 174 2.40% 3.36%

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 0 8 1796442 15677.53 563 552 114.6
A 10 83 376836 3284.84 563 552 114.6
A 13 254 8189 66.67 563 552 114.6
B 5 184 628081 5685.57 567 552 110.4
B 0 189 121625 1096.95 567 552 110.4
B 4 171 105512 950.96 567 552 110.4
C 15 214 219328 1649.94 567 570 132.6
C 0 10 73930 553.31 567 570 132.6
C 14 254 40566 301.66 567 570 132.6
D 12 235 1517795 10988.04 562 548 138.1
D 2 16 718584 5200.08 562 548 138.1
D 12 233 170626 1231.72 562 548 138.1

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