ASTROSAT CZTI

Data Quality Report

Orbit 00673

Creation date: 2024-06-27T14:01:23.198293
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_141T01_9000000096_00673cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00673cztM0_level2_quad_clean.evt
Size (bytes)1,111,680,00068,506,560
Size1.0 GB 65.3 MB
Events in quadrant A8,308,890410,356
Events in quadrant B8,854,408407,774
Events in quadrant C7,549,422411,951
Events in quadrant D8,525,878392,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293153
B0309271
C0270511
D0301262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526200.306466%
B65261031.578302%
C652670.107263%
D63184497.106679%

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 7171 6527 342 342 4.77% 5.24%
B 7171 6527 535 535 7.46% 8.20%
C 7171 6527 139 139 1.94% 2.13%
D 7171 6320 891 891 12.43% 14.10%

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 14 79 57301 118.0 2104 2084 467.9
A 13 160 29714 59.05 2104 2084 467.9
A 0 69 26492 52.16 2104 2084 467.9
B 7 221 796732 1603.94 2085 2098 495.4
B 0 220 53608 103.97 2085 2098 495.4
B 5 176 23215 42.62 2085 2098 495.4
C 15 241 20687 34.86 1910 1981 536.6
C 9 52 19440 32.54 1910 1981 536.6
C 2 192 11600 17.93 1910 1981 536.6
D 12 237 1001467 1814.49 1748 1820 550.9
D 12 33 268650 484.33 1748 1820 550.9
D 1 4 209656 377.25 1748 1820 550.9

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