ASTROSAT CZTI

Data Quality Report

Orbit 20151011_P01_140T01_9000000018_level2

Creation date: 2016-09-06T18:00:53.796697
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/AS1P01_140T01_9000000018cztM0_level2_bc.evt modeM0/AS1P01_140T01_9000000018cztM0_level2_quad_clean.evt
Size (bytes)2,109,919,680667,039,680
Size2.0 GB 636.1 MB
Events in quadrant A14,338,3734,029,164
Events in quadrant B14,344,1234,037,857
Events in quadrant C11,631,3064,033,647
Events in quadrant D19,365,2003,856,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012660
B012660
C012680
D012660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02705470
B02680570
C02454750
D02656750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A619389851.590300%
B6190011321.828756%
C61817440.071178%
D6189611811.908039%

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 83684 61965 449 449 0.54% 0.72%
B 83684 61930 631 631 0.75% 1.02%
C 83684 61849 15 15 0.02% 0.02%
D 83684 61925 685 685 0.82% 1.11%

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 66 2104755 3846.5 2626 2567 546.5
A 0 6 436990 794.89 2626 2567 546.5
A 13 145 425933 774.66 2626 2567 546.5
B 0 247 2513026 5246.8 2677 2592 478.5
B 8 5 486190 1010.72 2677 2592 478.5
B 0 183 142915 293.27 2677 2592 478.5
C 0 186 605345 1073.39 2624 2574 561.6
C 1 192 141140 246.75 2624 2574 561.6
C 1 1 85252 147.23 2624 2574 561.6
D 1 4 1708565 2858.54 2597 2521 596.8
D 12 249 1490726 2493.54 2597 2521 596.8
D 14 23 671433 1120.79 2597 2521 596.8

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