ASTROSAT CZTI

Data Quality Report

Orbit 17799

Creation date: 2024-06-27T17:41:02.469920
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_015T01_9000002650_17799cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17799cztM0_level2_quad_clean.evt
Size (bytes)492,897,60088,424,640
Size470.1 MB 84.3 MB
Events in quadrant A3,573,696550,169
Events in quadrant B3,526,026565,395
Events in quadrant C3,470,994546,296
Events in quadrant D3,894,528541,514

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151542
B0150212
C0147382
D0162892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68001612.367647%
B6801831.220409%
C68011091.602705%
D68011692.484929%

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 8850 6802 91 91 1.03% 1.34%
B 8851 6803 12 12 0.14% 0.18%
C 8851 6802 0 0 0.00% 0.00%
D 8851 6803 65 65 0.73% 0.96%

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 15 174 307981 1783.98 849 828 172.2
A 0 226 7468 38.57 849 828 172.2
A 12 194 6230 31.38 849 828 172.2
B 0 219 55681 336.71 857 838 162.9
B 3 64 27599 164.3 857 838 162.9
B 6 36 25112 149.03 857 838 162.9
C 14 238 128498 656.59 829 837 194.4
C 3 233 68945 350.29 829 837 194.4
C 5 218 38443 193.42 829 837 194.4
D 7 238 397521 1978.26 832 812 200.5
D 5 222 187508 930.99 832 812 200.5
D 10 70 47879 234.71 832 812 200.5

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