ASTROSAT CZTI

Data Quality Report

Orbit 00984

Creation date: 2024-06-27T14:05:42.478651
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/AS1P01_998T01_9000000188_00984cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00984cztM0_level2_quad_clean.evt
Size (bytes)998,815,68094,544,640
Size952.5 MB 90.2 MB
Events in quadrant A6,986,921631,811
Events in quadrant B7,447,406624,485
Events in quadrant C7,210,135608,467
Events in quadrant D8,218,714590,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249030
B0263030
C0255820
D0285510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5834340.582791%
B5834611.045595%
C5835230.394173%
D58351091.868038%

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 7079 5835 193 193 2.73% 3.31%
B 7079 5835 315 315 4.45% 5.40%
C 7080 5836 178 178 2.51% 3.05%
D 7080 5836 619 619 8.74% 10.61%

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 10 133 17530 36.37 1808 1816 432.1
A 12 189 16621 34.26 1808 1816 432.1
A 11 79 7990 14.29 1808 1816 432.1
B 5 249 134327 307.51 1856 1863 430.8
B 7 221 89013 202.31 1856 1863 430.8
B 8 234 46965 104.7 1856 1863 430.8
C 15 241 319106 668.59 1723 1782 474.6
C 3 9 96609 199.8 1723 1782 474.6
C 3 79 37992 76.29 1723 1782 474.6
D 12 188 910775 1772.68 1682 1739 512.8
D 1 4 803727 1563.93 1682 1739 512.8
D 2 16 51816 97.65 1682 1739 512.8

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