ASTROSAT CZTI

Data Quality Report

Orbit 17830

Creation date: 2024-06-27T17:41:25.302987
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_17830cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17830cztM0_level2_quad_clean.evt
Size (bytes)490,299,84094,524,480
Size467.6 MB 90.1 MB
Events in quadrant A3,231,284607,275
Events in quadrant B3,617,498616,407
Events in quadrant C3,355,945598,755
Events in quadrant D4,203,868587,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139792
B0151102
C0143012
D0170452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6489380.585606%
B6490891.371341%
C6489721.109570%
D64893455.316690%

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 8874 6491 0 0 0.00% 0.00%
B 8875 6492 20 20 0.23% 0.31%
C 8874 6491 0 0 0.00% 0.00%
D 8874 6491 270 270 3.04% 4.16%

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 0 226 7444 39.62 839 826 167.0
A 3 137 6070 31.39 839 826 167.0
A 12 194 6012 31.05 839 826 167.0
B 10 245 123234 773.96 843 823 158.2
B 7 220 93378 585.19 843 823 158.2
B 0 189 30131 185.3 843 823 158.2
C 14 238 126953 665.8 821 827 189.4
C 5 218 18210 91.76 821 827 189.4
C 13 61 5810 26.3 821 827 189.4
D 7 238 1048452 5066.14 800 779 206.8
D 10 70 39036 185.0 800 779 206.8
D 2 33 33159 156.58 800 779 206.8

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