ASTROSAT CZTI

Data Quality Report

Orbit 52554

Creation date: 2025-06-16T15:06:27.691175
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/AS1C09_011T06_9000006478_52554cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52554cztM0_level2_quad_clean.evt
Size (bytes)869,290,56076,916,160
Size829.0 MB 73.4 MB
Events in quadrant A4,102,839611,220
Events in quadrant B6,068,069613,784
Events in quadrant C6,798,981525,028
Events in quadrant D14,714,703133,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167342
B0225182
C0247522
D0481356

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63783215.032926%
B637866610.442145%
C637899815.647538%
D6377520581.621452%

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 7558 6379 202 202 2.67% 3.17%
B 7558 6379 360 360 4.76% 5.64%
C 7558 6379 785 785 10.39% 12.31%
D 7557 6377 4800 4800 63.52% 75.27%

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 3 14 738018 4394.2 664 649 167.8
A 4 239 256185 1522.81 664 649 167.8
A 15 174 76298 450.81 664 649 167.8
B 4 170 1403692 10211.84 650 627 137.4
B 10 254 1220897 8881.41 650 627 137.4
B 10 44 294688 2140.25 650 627 137.4
C 15 248 1670673 9757.06 615 608 171.2
C 15 224 1051313 6138.56 615 608 171.2
C 13 3 624405 3644.43 615 608 171.2
D 6 42 10056117 102163.49 340 323 98.4
D 8 176 1744022 17715.4 340 323 98.4
D 15 142 265099 2690.04 340 323 98.4

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