ASTROSAT CZTI

Data Quality Report

Orbit 51596

Creation date: 2025-04-12T17:12:23.523335
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_037T05_9000006460_51596cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51596cztM0_level2_quad_clean.evt
Size (bytes)585,861,120101,764,800
Size558.7 MB 97.1 MB
Events in quadrant A4,401,974686,367
Events in quadrant B5,135,017714,218
Events in quadrant C4,698,491646,998
Events in quadrant D6,920,995557,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175902
B0198292
C0187568
D0252292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68382303.363557%
B68385037.355952%
C68373324.855931%
D6837101314.816440%

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 7983 6839 81 81 1.01% 1.18%
B 7983 6838 272 272 3.41% 3.98%
C 7982 6838 232 232 2.91% 3.39%
D 7982 6838 809 809 10.14% 11.83%

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 12 250 703507 3720.35 777 760 188.9
A 4 175 204787 1080.12 777 760 188.9
A 5 240 72961 382.23 777 760 188.9
B 5 185 449082 2794.47 751 725 160.4
B 4 174 319782 1988.58 751 725 160.4
B 6 51 293270 1823.34 751 725 160.4
C 3 233 397125 1951.51 737 731 203.1
C 13 3 366080 1798.67 737 731 203.1
C 15 198 331542 1628.63 737 731 203.1
D 5 113 1650173 8192.33 721 694 201.3
D 2 155 483535 2398.09 721 694 201.3
D 3 12 456159 2262.12 721 694 201.3

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