ASTROSAT CZTI

Data Quality Report

Orbit 16462

Creation date: 2024-06-27T17:23:02.188243
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/AS1C04_007T04_9000002430_16462cztM0_level2.evt modeM0/AS1C04_007T04_9000002430_16462cztM0_level2_quad_clean.evt
Size (bytes)324,400,32060,376,320
Size309.4 MB 57.6 MB
Events in quadrant A2,331,725382,441
Events in quadrant B2,724,095387,714
Events in quadrant C2,186,574385,251
Events in quadrant D2,289,020370,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098001
B0107691
C093321
D098621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4297932.164301%
B42971543.583896%
C42971232.862462%
D42971313.048639%

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 4298 4298 65 65 1.51% 1.51%
B 4298 4298 93 93 2.16% 2.16%
C 4298 4298 47 47 1.09% 1.09%
D 4298 4298 94 94 2.19% 2.19%

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 15 174 401941 3883.17 501 488 103.4
A 0 226 4385 37.69 501 488 103.4
A 12 194 3821 32.24 501 488 103.4
B 7 220 294132 3041.74 499 487 96.5
B 15 35 185134 1912.67 499 487 96.5
B 0 198 85949 885.26 499 487 96.5
C 7 247 193906 1708.03 481 483 113.2
C 14 238 74768 655.97 481 483 113.2
C 3 233 32679 284.3 481 483 113.2
D 1 52 371157 3094.57 483 469 119.8
D 2 33 29718 244.17 483 469 119.8
D 12 218 24697 202.26 483 469 119.8

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