ASTROSAT CZTI

Data Quality Report

Orbit 39968

Creation date: 2024-06-27T22:10:43.145536
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_054T03_9000005516_39968cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39968cztM0_level2_quad_clean.evt
Size (bytes)337,982,40093,769,920
Size322.3 MB 89.4 MB
Events in quadrant A2,910,690642,439
Events in quadrant B2,928,954666,861
Events in quadrant C2,641,126632,432
Events in quadrant D3,621,377530,084

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118353
B0120782
C0109302
D0145732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5247310.590814%
B5247811.543739%
C5247100.190585%
D52474789.109968%

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 7340 5248 17 17 0.23% 0.32%
B 7340 5248 66 66 0.90% 1.26%
C 7340 5248 11 11 0.15% 0.21%
D 7340 5248 448 448 6.10% 8.54%

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 458033 3777.24 604 595 121.1
A 13 248 93270 765.25 604 595 121.1
A 6 10 15304 121.46 604 595 121.1
B 4 171 303376 2629.93 600 585 115.1
B 5 255 229850 1991.31 600 585 115.1
B 0 230 25378 215.34 600 585 115.1
C 15 214 220411 1626.91 587 591 135.1
C 9 54 71394 524.02 587 591 135.1
C 0 10 43867 320.29 587 591 135.1
D 2 250 1151012 8489.52 555 540 135.5
D 12 227 128463 943.96 555 540 135.5
D 2 249 107163 786.79 555 540 135.5

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