ASTROSAT CZTI

Data Quality Report

Orbit 49824

Creation date: 2024-12-14T09:07:12.705226
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/AS1A13_037T01_9000006440_49824cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49824cztM0_level2_quad_clean.evt
Size (bytes)969,364,80051,822,720
Size924.5 MB 49.4 MB
Events in quadrant A7,347,487464,519
Events in quadrant B3,357,843617,445
Events in quadrant C12,015,36152,946
Events in quadrant D12,714,17429,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258501
B0138961
C0396468
D0416731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5781123321.328490%
B57811532.646601%
C5780538593.166090%
D5780554695.951557%

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 6951 5782 1131 1131 16.27% 19.56%
B 6951 5782 96 96 1.38% 1.66%
C 6950 5780 3410 3410 49.06% 59.00%
D 6950 5781 4010 4010 57.70% 69.37%

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 4 4 2098993 13907.96 590 573 150.9
A 0 175 913029 6047.6 590 573 150.9
A 0 50 339789 2248.26 590 573 150.9
B 5 49 243316 1807.74 634 616 134.3
B 10 28 186021 1380.98 634 616 134.3
B 4 206 86175 637.28 634 616 134.3
C 15 147 4161868 72685.14 190 189 57.3
C 15 197 1974999 34490.73 190 189 57.3
C 5 236 966478 16876.57 190 189 57.3
D 7 61 6539330 77006.14 262 251 84.9
D 14 66 1009485 11885.04 262 251 84.9
D 7 126 712056 8382.43 262 251 84.9

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