ASTROSAT CZTI

Data Quality Report

Orbit 30565

Creation date: 2024-06-27T20:17:01.952408
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_094T78_9000004402_30565cztM0_level2.evt modeM0/AS1A10_094T78_9000004402_30565cztM0_level2_quad_clean.evt
Size (bytes)1,377,331,200283,570,560
Size1.3 GB 270.4 MB
Events in quadrant A7,693,1371,917,615
Events in quadrant B12,486,7361,895,684
Events in quadrant C8,143,1581,835,292
Events in quadrant D12,265,6951,791,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338833
B0503263
C0345464
D0475603

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166731260.755713%
B166732591.553410%
C166723091.853407%
D166728965.374280%

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 17708 16675 2 2 0.01% 0.01%
B 17708 16675 20 20 0.11% 0.12%
C 17707 16674 2 2 0.01% 0.01%
D 17707 16674 798 798 4.51% 4.79%

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 8 192 39965 95.75 1984 1936 397.2
A 13 254 26532 61.93 1984 1936 397.2
A 3 137 19892 45.21 1984 1936 397.2
B 6 159 4674173 12677.42 1948 1895 368.6
B 4 171 71996 190.21 1948 1895 368.6
B 12 111 46706 121.59 1948 1895 368.6
C 14 238 354806 809.72 1886 1895 435.8
C 3 233 241312 549.32 1886 1895 435.8
C 14 254 63146 140.53 1886 1895 435.8
D 1 52 4053460 9080.44 1902 1854 446.2
D 8 195 657263 1468.9 1902 1854 446.2
D 13 249 174353 386.6 1902 1854 446.2

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