ASTROSAT CZTI

Data Quality Report

Orbit 20210824_A10_059T01_9000004656_level2

Creation date: 2021-08-25T14:26:59.502318
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_059T01_9000004656cztM0_level2_bc.evt modeM0/AS1A10_059T01_9000004656cztM0_level2_quad_clean.evt
Size (bytes)2,191,501,440496,926,720
Size2.0 GB 473.9 MB
Events in quadrant A8,274,9663,410,998
Events in quadrant B17,921,4583,343,876
Events in quadrant C14,860,8173,230,289
Events in quadrant D23,200,8562,926,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0703310
B01033310
C01019260
D01274740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06340
B06340
C06340
D06340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A311195321.709567%
B3111914374.617758%
C3111922967.378129%
D31119449414.441338%

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 38363 31115 4 4 0.01% 0.01%
B 38364 31118 50 50 0.13% 0.16%
C 38365 31118 42 42 0.11% 0.13%
D 38365 31119 284 284 0.74% 0.91%

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 765654 1863.17 1933 1911 409.9
A 13 254 57689 136.07 1933 1911 409.9
A 13 6 40074 93.1 1933 1911 409.9
B 6 159 7946954 22452.87 1910 1879 353.9
B 4 80 1928928 5445.86 1910 1879 353.9
B 5 172 383919 1079.65 1910 1879 353.9
C 3 233 6300221 14950.04 1806 1812 421.3
C 0 10 1364628 3234.81 1806 1812 421.3
C 15 208 100413 234.04 1806 1812 421.3
D 12 33 8181395 20703.12 1781 1734 395.1
D 8 195 5055158 12790.46 1781 1734 395.1
D 13 249 1591815 4024.57 1781 1734 395.1

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