ASTROSAT CZTI

Data Quality Report

Orbit 41662

Creation date: 2024-06-27T22:31:16.040218
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_116T01_9000005682_41662cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41662cztM0_level2_quad_clean.evt
Size (bytes)373,328,64092,534,400
Size356.0 MB 88.2 MB
Events in quadrant A2,851,781644,249
Events in quadrant B2,579,375652,499
Events in quadrant C3,494,582597,472
Events in quadrant D4,492,821546,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116231
B0109142
C0136221
D0168491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515360.116437%
B515290.174689%
C51522935.687112%
D51523767.298137%

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 7186 5154 1 1 0.01% 0.02%
B 7185 5153 3 3 0.04% 0.06%
C 7185 5153 232 232 3.23% 4.50%
D 7185 5153 350 350 4.87% 6.79%

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 504900 4109.34 602 591 122.7
A 2 79 8984 68.39 602 591 122.7
A 13 254 7354 55.11 602 591 122.7
B 0 245 99165 875.91 593 578 112.6
B 0 190 65005 572.41 593 578 112.6
B 0 186 35422 309.58 593 578 112.6
C 14 17 752737 5676.53 574 577 132.5
C 0 10 287997 2169.15 574 577 132.5
C 15 214 209060 1573.41 574 577 132.5
D 13 249 1297950 9374.08 573 557 138.4
D 12 79 729250 5265.04 573 557 138.4
D 2 249 111208 799.49 573 557 138.4

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