ASTROSAT CZTI

Data Quality Report

Orbit 50775

Creation date: 2025-02-17T10:52:21.060539
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/AS1C07_001T01_9000006450_50775cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50775cztM0_level2_quad_clean.evt
Size (bytes)747,910,08094,415,040
Size713.3 MB 90.0 MB
Events in quadrant A4,782,395651,180
Events in quadrant B3,497,592715,075
Events in quadrant C8,360,322522,345
Events in quadrant D10,489,797469,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193390
B0158650
C0298390
D0362585

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71761902.647715%
B71761181.644370%
C7176161222.463768%
D7175170523.763066%

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 7176 7176 105 105 1.46% 1.46%
B 7176 7176 32 32 0.45% 0.45%
C 7176 7176 1000 1000 13.94% 13.94%
D 7175 7175 1293 1293 18.02% 18.02%

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 80 541761 2951.83 745 726 183.3
A 14 254 339256 1846.98 745 726 183.3
A 12 250 173748 943.99 745 726 183.3
B 9 251 87057 537.8 745 719 160.5
B 10 246 48259 296.12 745 719 160.5
B 4 206 47536 291.62 745 719 160.5
C 4 210 2367927 12868.78 670 666 184.0
C 15 174 1075000 5840.24 670 666 184.0
C 5 10 331506 1798.5 670 666 184.0
D 8 242 3560440 19261.23 644 621 184.8
D 8 241 759749 4107.44 644 621 184.8
D 8 226 449808 2430.43 644 621 184.8

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