ASTROSAT CZTI

Data Quality Report

Orbit 39735

Creation date: 2024-06-27T22:08:21.955298
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_022T01_9000005494_39735cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39735cztM0_level2_quad_clean.evt
Size (bytes)373,204,80099,982,080
Size355.9 MB 95.4 MB
Events in quadrant A3,305,627693,234
Events in quadrant B2,724,166706,983
Events in quadrant C3,946,319644,896
Events in quadrant D3,418,914604,810

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130743
B0113422
C0152352
D0136322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5396831.538176%
B5396150.277984%
C53961562.891030%
D53971392.575505%

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 7398 5397 46 46 0.62% 0.85%
B 7398 5397 7 7 0.09% 0.13%
C 7398 5397 123 123 1.66% 2.28%
D 7399 5398 103 103 1.39% 1.91%

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 460750 3516.11 650 639 130.9
A 13 248 212157 1616.39 650 639 130.9
A 15 174 55337 418.0 650 639 130.9
B 5 255 100759 823.36 639 622 121.6
B 0 230 29787 239.81 639 622 121.6
B 5 172 23259 186.13 639 622 121.6
C 9 187 904640 6307.27 620 626 143.3
C 15 208 289366 2014.53 620 626 143.3
C 15 214 238485 1659.53 620 626 143.3
D 12 227 379421 2470.37 630 613 153.3
D 12 233 349465 2275.01 630 613 153.3
D 2 250 85503 553.6 630 613 153.3

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