ASTROSAT CZTI

Data Quality Report

Orbit 20190418_A05_007T06_9000002844_level2

Creation date: 2019-04-20T16:04:25.413427
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/AS1A05_007T06_9000002844cztM0_level2_bc.evt modeM0/AS1A05_007T06_9000002844cztM0_level2_quad_clean.evt
Size (bytes)1,752,454,080726,068,160
Size1.6 GB 692.4 MB
Events in quadrant A10,422,7264,615,702
Events in quadrant B10,634,2574,746,073
Events in quadrant C14,962,7224,626,105
Events in quadrant D13,550,8824,481,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010420
B010420
C010420
D010420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0670
B0670
C0670
D0670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01061710
B01064680
C01224920
D01171790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513665341.039598%
B513665971.162247%
C513669801.907877%
D5136612752.482187%

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 57871 51365 27 27 0.05% 0.05%
B 57871 51367 3 3 0.01% 0.01%
C 57871 51368 0 0 0.00% 0.00%
D 57871 51367 187 187 0.32% 0.36%

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 9 143 331724 578.47 2610 2558 569.0
A 13 254 61055 102.8 2610 2558 569.0
A 0 226 16821 25.07 2610 2558 569.0
B 0 229 69330 133.17 2667 2602 501.1
B 7 220 62799 120.14 2667 2602 501.1
B 4 216 57021 108.61 2667 2602 501.1
C 3 233 4953137 8116.76 2573 2556 609.9
C 0 207 66465 104.78 2573 2556 609.9
C 5 4 33846 51.3 2573 2556 609.9
D 11 176 2481788 4131.56 2595 2506 600.1
D 5 222 322128 532.63 2595 2506 600.1
D 1 52 223573 368.39 2595 2506 600.1

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