ASTROSAT CZTI

Data Quality Report

Orbit 20180315_T02_014T01_9000001980_level2

Creation date: 2018-07-02T14:02:05.905184
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/AS1T02_014T01_9000001980cztM0_level2_bc.evt modeM0/AS1T02_014T01_9000001980cztM0_level2_quad_clean.evt
Size (bytes)448,778,880184,982,400
Size428.0 MB 176.4 MB
Events in quadrant A3,302,1841,213,889
Events in quadrant B3,129,1271,239,652
Events in quadrant C2,906,4161,195,760
Events in quadrant D3,441,0791,135,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272320
B0265990
C0256370
D0271730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118241060.896482%
B118241241.048714%
C118241030.871110%
D118241040.879567%

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 14374 11825 3 3 0.02% 0.03%
B 14374 11824 4 4 0.03% 0.03%
C 14374 11824 8 8 0.06% 0.07%
D 14374 11824 6 6 0.04% 0.05%

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 8 15 532593 3422.99 699 687 155.4
A 1 162 35590 224.61 699 687 155.4
A 9 143 22856 142.66 699 687 155.4
B 0 189 75508 546.84 710 697 136.8
B 3 64 57793 417.35 710 697 136.8
B 3 209 53863 388.62 710 697 136.8
C 15 208 226699 1469.38 680 677 153.8
C 8 128 8823 52.96 680 677 153.8
C 8 112 5386 30.61 680 677 153.8
D 8 195 336584 2095.08 681 657 160.3
D 2 136 121407 753.08 681 657 160.3
D 5 222 113088 701.2 681 657 160.3

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