ASTROSAT CZTI

Data Quality Report

Orbit 20190104_T03_052T01_9000002622_level2

Creation date: 2019-01-05T12:32:23.914531
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_052T01_9000002622cztM0_level2_bc.evt modeM0/AS1T03_052T01_9000002622cztM0_level2_quad_clean.evt
Size (bytes)291,360,960115,620,480
Size277.9 MB 110.3 MB
Events in quadrant A1,967,169732,958
Events in quadrant B2,099,543759,777
Events in quadrant C2,068,730718,928
Events in quadrant D2,096,643694,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181790
B0186020
C0185700
D0184830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8579370.431286%
B8579810.944166%
C85791221.422077%
D8579500.582819%

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 11179 8581 1 1 0.01% 0.01%
B 11179 8581 1 1 0.01% 0.01%
C 11179 8582 0 0 0.00% 0.00%
D 11179 8580 8 8 0.07% 0.09%

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 31 88513 827.88 485 475 106.3
A 14 237 10963 98.63 485 475 106.3
A 5 98 10575 94.98 485 475 106.3
B 0 198 56912 603.3 494 484 93.5
B 10 245 55923 592.73 494 484 93.5
B 0 230 30971 325.95 494 484 93.5
C 3 233 261546 2388.31 467 464 109.3
C 5 218 10117 88.3 467 464 109.3
C 13 61 2737 20.79 467 464 109.3
D 1 52 69097 638.39 471 455 107.5
D 13 232 57639 531.83 471 455 107.5
D 2 152 43145 397.03 471 455 107.5

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