ASTROSAT CZTI

Data Quality Report

Orbit 43479

Creation date: 2024-06-27T22:52:28.333999
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_018T01_9000005874_43479cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43479cztM0_level2_quad_clean.evt
Size (bytes)447,814,08088,997,760
Size427.1 MB 84.9 MB
Events in quadrant A5,058,736576,194
Events in quadrant B3,241,624612,917
Events in quadrant C2,639,176592,941
Events in quadrant D5,192,810512,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188531
B0135881
C0115821
D0194351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57185249.164043%
B57181292.256034%
C571950.087428%
D57194367.623710%

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 7061 5719 250 250 3.54% 4.37%
B 7061 5719 116 116 1.64% 2.03%
C 7062 5720 3 3 0.04% 0.05%
D 7062 5720 438 438 6.20% 7.66%

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 15 222 1968968 16067.29 593 581 122.5
A 10 83 592649 4832.85 593 581 122.5
A 15 237 179174 1457.8 593 581 122.5
B 15 36 271165 2292.51 605 588 118.0
B 0 245 138330 1167.04 605 588 118.0
B 5 255 112212 945.75 605 588 118.0
C 15 214 244808 1753.55 593 596 139.3
C 3 233 63019 448.22 593 596 139.3
C 14 254 11923 81.33 593 596 139.3
D 13 249 1249261 8822.91 573 555 141.5
D 2 16 782312 5523.61 573 555 141.5
D 1 52 429799 3032.88 573 555 141.5

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