ASTROSAT CZTI

Data Quality Report

Orbit 03923

Creation date: 2024-06-27T14:35:16.757700
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/AS1G05_172T01_9000000502_03923cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03923cztM0_level2_quad_clean.evt
Size (bytes)422,173,44063,480,960
Size402.6 MB 60.5 MB
Events in quadrant A3,145,938375,439
Events in quadrant B3,066,823381,291
Events in quadrant C2,883,086377,904
Events in quadrant D3,271,946358,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131662
B0128241
C0125981
D0139051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6144641.041667%
B6144671.090495%
C6144480.781250%
D61441452.360026%

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 7449 6145 7 7 0.09% 0.11%
B 7449 6145 0 0 0.00% 0.00%
C 7449 6145 0 0 0.00% 0.00%
D 7449 6145 97 97 1.30% 1.58%

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 8 15 121347 798.07 745 731 151.1
A 0 118 58134 379.82 745 731 151.1
A 0 50 48879 318.58 745 731 151.1
B 15 204 97656 683.41 754 738 141.8
B 0 229 21869 149.0 754 738 141.8
B 3 0 13803 92.13 754 738 141.8
C 10 65 21295 122.91 728 731 167.3
C 7 190 6648 35.37 728 731 167.3
C 13 61 6195 32.66 728 731 167.3
D 4 160 142182 820.26 717 693 172.5
D 2 232 125152 721.53 717 693 172.5
D 13 248 101474 584.26 717 693 172.5

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
Veto Counter