ASTROSAT CZTI

Data Quality Report

Orbit 45768

Creation date: 2024-06-27T23:15:58.159489
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_183T01_9000006124_45768cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45768cztM0_level2_quad_clean.evt
Size (bytes)721,356,480112,184,640
Size687.9 MB 107.0 MB
Events in quadrant A6,990,970788,780
Events in quadrant B9,815,217616,481
Events in quadrant C3,871,013801,244
Events in quadrant D5,457,747679,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259424
B0343391
C0166611
D0212091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73323024.118931%
B7333208628.446748%
C7333781.063685%
D73336398.714032%

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 7347 7333 63 63 0.86% 0.86%
B 7348 7334 1214 1214 16.52% 16.55%
C 7348 7334 46 46 0.63% 0.63%
D 7348 7334 474 474 6.45% 6.46%

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 3225550 17737.15 858 836 181.8
A 13 248 285785 1567.33 858 836 181.8
A 14 235 104010 567.5 858 836 181.8
B 3 112 4178269 28083.2 752 730 148.8
B 12 18 1381145 9279.74 752 730 148.8
B 0 171 498355 3345.25 752 730 148.8
C 14 96 230406 1144.88 843 847 200.5
C 14 254 178708 887.05 843 847 200.5
C 1 3 78868 389.11 843 847 200.5
D 2 249 1148687 5559.44 813 787 206.5
D 13 249 475388 2298.56 813 787 206.5
D 11 176 303976 1468.39 813 787 206.5

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