ASTROSAT CZTI

Data Quality Report

Orbit 18974

Creation date: 2024-06-27T17:57:19.911690
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/AS1A05_166T04_9000002826_18974cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18974cztM0_level2_quad_clean.evt
Size (bytes)523,293,120107,395,200
Size499.1 MB 102.4 MB
Events in quadrant A3,281,294699,017
Events in quadrant B3,640,922723,722
Events in quadrant C3,397,078701,544
Events in quadrant D5,081,065668,188

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138882
B0149482
C0140792
D0195242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6599280.424307%
B6599851.288074%
C6599460.697075%
D65995848.849826%

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 7854 6600 0 0 0.00% 0.00%
B 7854 6600 25 25 0.32% 0.38%
C 7854 6600 0 0 0.00% 0.00%
D 7854 6599 346 346 4.41% 5.24%

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 11 29 14799 81.74 848 831 170.9
A 0 226 7337 38.07 848 831 170.9
A 13 254 6763 34.71 848 831 170.9
B 3 112 151486 938.63 854 835 160.5
B 7 220 106728 659.77 854 835 160.5
B 12 111 18562 110.45 854 835 160.5
C 14 238 130282 664.02 833 839 194.9
C 3 233 7830 35.86 833 839 194.9
C 7 220 6791 30.53 833 839 194.9
D 7 238 836460 4350.77 795 776 192.1
D 1 52 586402 3048.91 795 776 192.1
D 9 68 585523 3044.33 795 776 192.1

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