ASTROSAT CZTI

Data Quality Report

Orbit 32317

Creation date: 2024-06-27T20:38:47.686899
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_005T01_9000004700_32317cztM0_level2.evt modeM0/AS1A10_005T01_9000004700_32317cztM0_level2_quad_clean.evt
Size (bytes)1,637,406,720217,837,440
Size1.5 GB 207.7 MB
Events in quadrant A9,405,5951,415,071
Events in quadrant B13,472,0571,381,619
Events in quadrant C10,702,1101,325,195
Events in quadrant D14,862,8671,300,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390053
B0527783
C0429643
D0563843

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170507064.140762%
B170505723.354839%
C1705010926.404692%
D170505573.266862%

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 18155 17052 390 390 2.15% 2.29%
B 18155 17052 136 136 0.75% 0.80%
C 18155 17052 79 79 0.44% 0.46%
D 18155 17052 379 379 2.09% 2.22%

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 9 143 1449683 3585.32 2016 1974 403.8
A 12 189 107151 260.48 2016 1974 403.8
A 13 6 57554 137.65 2016 1974 403.8
B 6 159 4828964 12709.28 1998 1948 379.8
B 5 172 434085 1137.79 1998 1948 379.8
B 0 190 182408 475.14 1998 1948 379.8
C 3 233 1923019 4229.68 1915 1921 454.2
C 14 238 489497 1073.5 1915 1921 454.2
C 0 10 453413 994.05 1915 1921 454.2
D 8 195 6000210 12716.17 1964 1910 471.7
D 13 249 597754 1263.17 1964 1910 471.7
D 12 233 294270 619.79 1964 1910 471.7

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