ASTROSAT CZTI

Data Quality Report

Orbit 51553

Creation date: 2025-04-09T20:13:33.992594
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/AS1A13_037T05_9000006460_51553cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51553cztM0_level2_quad_clean.evt
Size (bytes)715,731,84081,074,880
Size682.6 MB 77.3 MB
Events in quadrant A11,281,345323,803
Events in quadrant B7,394,232551,754
Events in quadrant C3,145,598598,151
Events in quadrant D4,181,611539,047

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379161
B0263181
C0140041
D0168031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335326751.570639%
B6336141322.301136%
C63361121.767677%
D63363916.171086%

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 7425 6335 3089 3089 41.60% 48.76%
B 7426 6336 1110 1110 14.95% 17.52%
C 7426 6336 48 48 0.65% 0.76%
D 7426 6336 292 292 3.93% 4.61%

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 15 32 6839124 53936.93 516 504 126.8
A 12 3 1298214 10235.18 516 504 126.8
A 12 250 341881 2692.48 516 504 126.8
B 10 44 3539013 25542.41 651 628 138.5
B 8 128 342584 2468.47 651 628 138.5
B 4 81 188931 1359.3 651 628 138.5
C 13 3 246847 1304.73 691 686 188.7
C 14 245 73829 387.68 691 686 188.7
C 1 12 18671 95.32 691 686 188.7
D 6 42 474259 2583.16 670 648 183.3
D 12 6 267284 1454.28 670 648 183.3
D 8 176 205153 1115.41 670 648 183.3

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