ASTROSAT CZTI

Data Quality Report

Orbit 20180411_T02_041T01_9000002032_level2

Creation date: 2018-04-12T10:25:22.087071
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_041T01_9000002032cztM0_level2_bc.evt modeM0/AS1T02_041T01_9000002032cztM0_level2_quad_clean.evt
Size (bytes)2,348,562,2401,355,440,320
Size2.2 GB 1.3 GB
Events in quadrant A14,242,9958,979,835
Events in quadrant B16,500,0919,222,622
Events in quadrant C16,876,6079,206,642
Events in quadrant D18,724,7038,841,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01435210
B01499750
C01498080
D01554930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014280
B014280
C014280
D014280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701636230.887932%
B701639241.316933%
C701639591.366817%
D701639321.328335%

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 80894 70166 14 14 0.02% 0.02%
B 80894 70165 43 43 0.05% 0.06%
C 80894 70165 22 22 0.03% 0.03%
D 80894 70163 82 82 0.10% 0.12%

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 15 222 245449 304.46 3592 3517 794.6
A 15 69 118829 145.11 3592 3517 794.6
A 1 162 87432 105.6 3592 3517 794.6
B 8 250 902580 1297.04 3658 3565 693.1
B 0 219 576287 826.29 3658 3565 693.1
B 3 64 182000 257.43 3658 3565 693.1
C 3 233 1328238 1659.02 3597 3576 798.5
C 4 254 1300145 1623.83 3597 3576 798.5
C 12 4 71860 85.52 3597 3576 798.5
D 5 222 1083871 1276.76 3600 3486 846.2
D 8 195 924829 1088.81 3600 3486 846.2
D 1 52 917137 1079.72 3600 3486 846.2

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