ASTROSAT CZTI

Data Quality Report

Orbit 28718

Creation date: 2024-06-27T19:55:19.670997
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/AS1A10_123T03_9000004120_28718cztM0_level2.evt modeM0/AS1A10_123T03_9000004120_28718cztM0_level2_quad_clean.evt
Size (bytes)488,010,24083,289,600
Size465.4 MB 79.4 MB
Events in quadrant A3,126,603547,804
Events in quadrant B3,122,074550,659
Events in quadrant C3,210,147519,939
Events in quadrant D4,932,927504,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125271
B0125001
C0128381
D0186661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5710961.681261%
B5710911.593695%
C57101352.364273%
D57104818.423818%

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 7020 5710 0 0 0.00% 0.00%
B 7020 5710 1 1 0.01% 0.02%
C 7020 5710 13 13 0.19% 0.23%
D 7020 5710 415 415 5.91% 7.27%

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 13 254 9531 54.56 810 796 160.1
A 0 226 6979 38.62 810 796 160.1
A 3 137 6883 38.02 810 796 160.1
B 0 190 22651 149.0 786 770 146.9
B 12 111 17110 111.27 786 770 146.9
B 11 111 15742 101.95 786 770 146.9
C 3 233 135861 777.21 755 762 173.8
C 14 238 125544 717.86 755 762 173.8
C 13 61 5035 24.58 755 762 173.8
D 7 80 900339 5092.12 757 740 176.7
D 8 195 423897 2395.25 757 740 176.7
D 1 52 358201 2023.38 757 740 176.7

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