ASTROSAT CZTI

Data Quality Report

Orbit 50521

Creation date: 2025-01-30T11:37:24.092328
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/AS1T05_239T01_9000006444_50521cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50521cztM0_level2_quad_clean.evt
Size (bytes)630,515,52092,776,320
Size601.3 MB 88.5 MB
Events in quadrant A4,959,772623,244
Events in quadrant B3,590,133713,447
Events in quadrant C9,243,342447,669
Events in quadrant D5,031,955562,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191072
B0152352
C0319882
D0196142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66324356.559107%
B66321352.035585%
C6632216332.614596%
D66324967.478890%

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 7827 6633 334 334 4.27% 5.04%
B 7827 6633 66 66 0.84% 1.00%
C 7827 6633 1798 1798 22.97% 27.11%
D 7827 6633 418 418 5.34% 6.30%

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 4 249 687176 3847.26 714 698 178.4
A 3 130 540178 3023.43 714 698 178.4
A 4 3 249623 1395.06 714 698 178.4
B 7 0 214945 1374.0 727 702 155.9
B 4 170 92609 589.43 727 702 155.9
B 10 246 61581 390.43 727 702 155.9
C 15 235 3754574 22929.2 589 585 163.7
C 12 249 1246252 7608.48 589 585 163.7
C 15 196 504044 3075.11 589 585 163.7
D 6 42 1406304 7271.52 685 660 193.3
D 2 249 210665 1086.37 685 660 193.3
D 0 19 125872 647.73 685 660 193.3

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