ASTROSAT CZTI

Data Quality Report

Orbit 40418

Creation date: 2024-06-27T22:15:51.724068
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/AS1A12_022T01_9000005540_40418cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40418cztM0_level2_quad_clean.evt
Size (bytes)340,240,32090,696,960
Size324.5 MB 86.5 MB
Events in quadrant A2,893,350645,980
Events in quadrant B2,445,309661,102
Events in quadrant C2,634,634619,884
Events in quadrant D4,227,173465,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117483
B0103462
C0107162
D0159442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5050270.534653%
B505070.138614%
C5050230.455446%
D5050115822.930693%

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 7171 5051 18 18 0.25% 0.36%
B 7171 5051 2 2 0.03% 0.04%
C 7171 5051 20 20 0.28% 0.40%
D 7171 5051 296 296 4.13% 5.86%

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 10 83 465350 3850.93 594 583 120.7
A 13 248 131655 1086.03 594 583 120.7
A 3 137 6062 45.4 594 583 120.7
B 5 255 40114 349.24 591 575 113.2
B 3 112 36635 318.52 591 575 113.2
B 7 202 26041 224.94 591 575 113.2
C 15 214 220406 1643.09 580 584 133.8
C 14 254 133040 990.06 580 584 133.8
C 0 10 21149 153.72 580 584 133.8
D 12 227 1436300 11091.51 528 514 129.4
D 13 171 220938 1702.78 528 514 129.4
D 12 191 187160 1441.85 528 514 129.4

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