ASTROSAT CZTI

Data Quality Report

Orbit 27274

Creation date: 2024-06-27T19:38:19.892039
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/AS1T03_243T01_9000003918_27274cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27274cztM0_level2_quad_clean.evt
Size (bytes)669,844,800101,946,240
Size638.8 MB 97.2 MB
Events in quadrant A3,970,323670,671
Events in quadrant B4,221,136678,666
Events in quadrant C3,506,412649,263
Events in quadrant D8,100,859586,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164920
B0171610
C0150050
D0288580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72022463.415718%
B72022213.068592%
C7202931.291308%
D7202138319.202999%

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 7732 7203 86 86 1.11% 1.19%
B 7732 7203 60 60 0.78% 0.83%
C 7732 7203 0 0 0.00% 0.00%
D 7732 7203 1266 1266 16.37% 17.58%

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 12 96 462523 2571.13 895 878 179.5
A 13 248 38893 211.72 895 878 179.5
A 13 254 11474 59.01 895 878 179.5
B 10 245 403145 2333.09 896 873 172.4
B 3 64 130982 754.6 896 873 172.4
B 15 32 74618 427.7 896 873 172.4
C 14 238 136002 666.96 859 864 202.6
C 15 208 16909 79.19 859 864 202.6
C 3 233 8379 37.09 859 864 202.6
D 1 52 4779398 24507.18 790 771 195.0
D 2 250 199992 1021.7 790 771 195.0
D 12 233 51823 261.82 790 771 195.0

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