ASTROSAT CZTI

Data Quality Report

Orbit 51219

Creation date: 2025-03-18T07:07:26.775655
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_9000006454_51219cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51219cztM0_level2_quad_clean.evt
Size (bytes)615,375,360101,482,560
Size586.9 MB 96.8 MB
Events in quadrant A4,688,330677,599
Events in quadrant B5,664,341721,899
Events in quadrant C7,798,380551,008
Events in quadrant D4,075,989626,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189232
B0217152
C0280552
D0174452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71172823.962344%
B71175697.994942%
C7118156822.028660%
D71182052.880022%

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 9452 7119 224 224 2.37% 3.15%
B 9452 7117 304 304 3.22% 4.27%
C 9452 7118 1458 1458 15.43% 20.48%
D 9453 7120 150 150 1.59% 2.11%

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 8 26 598848 3227.65 747 731 185.3
A 12 3 474073 2554.32 747 731 185.3
A 13 164 271200 1459.55 747 731 185.3
B 5 185 677961 4289.4 744 718 157.9
B 10 254 492605 3115.43 744 718 157.9
B 8 128 322398 2037.4 744 718 157.9
C 4 12 3657716 19609.21 674 667 186.5
C 10 252 559680 2997.44 674 667 186.5
C 9 38 337753 1807.47 674 667 186.5
D 3 12 201285 987.1 721 695 203.2
D 8 176 177003 867.61 721 695 203.2
D 2 153 157460 771.44 721 695 203.2

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