ASTROSAT CZTI

Data Quality Report

Orbit 32274

Creation date: 2024-06-27T20:38:20.189838
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/AS1A09_131T01_9000004696_32274cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32274cztM0_level2_quad_clean.evt
Size (bytes)1,258,381,440190,702,080
Size1.2 GB 181.9 MB
Events in quadrant A5,862,0281,266,991
Events in quadrant B12,694,2051,234,466
Events in quadrant C8,441,8971,208,823
Events in quadrant D10,267,7501,197,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255264
B0467963
C0328913
D0393593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12550880.701195%
B1255011939.505976%
C125507596.047809%
D125504433.529880%

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 14145 12552 1 1 0.01% 0.01%
B 14145 12552 590 590 4.17% 4.70%
C 14145 12552 402 402 2.84% 3.20%
D 14145 12552 287 287 2.03% 2.29%

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 13 6 27559 86.96 1506 1469 300.0
A 13 254 23273 72.67 1506 1469 300.0
A 3 137 14961 44.97 1506 1469 300.0
B 6 159 3371814 12250.22 1452 1410 275.1
B 4 80 2890934 10502.39 1452 1410 275.1
B 5 172 445245 1613.18 1452 1410 275.1
C 0 10 1887564 5718.91 1415 1418 329.8
C 3 233 686068 2075.9 1415 1418 329.8
C 14 238 229461 691.44 1415 1418 329.8
D 8 195 3343252 9668.1 1444 1403 345.7
D 12 233 710575 2051.66 1444 1403 345.7
D 13 249 309070 890.09 1444 1403 345.7

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