ASTROSAT CZTI

Data Quality Report

Orbit 20180112_G08_083T02_9000001840_level2

Creation date: 2018-07-31T16:13:04.418430
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/AS1G08_083T02_9000001840cztM0_level2_bc.evt modeM0/AS1G08_083T02_9000001840cztM0_level2_quad_clean.evt
Size (bytes)2,173,688,640655,352,640
Size2.0 GB 625.0 MB
Events in quadrant A19,427,0574,032,561
Events in quadrant B14,803,7594,155,911
Events in quadrant C10,629,2024,103,092
Events in quadrant D17,310,9823,873,208

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01531010
B01272750
C01099320
D01316580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010920
B010920
C010920
D010920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5370521884.074109%
B5370518793.498743%
C537053650.679639%
D5370517023.169165%

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 63941 53700 4 4 0.01% 0.01%
B 63941 53700 8 8 0.01% 0.01%
C 63941 53702 0 0 0.00% 0.00%
D 63941 53701 542 542 0.85% 1.01%

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 2913446 4972.63 2703 2648 585.4
A 13 251 2756550 4704.6 2703 2648 585.4
A 14 237 1192832 2033.24 2703 2648 585.4
B 4 239 2958751 5698.68 2748 2677 518.7
B 0 219 275440 525.83 2748 2677 518.7
B 3 209 191436 363.89 2748 2677 518.7
C 15 208 82486 136.08 2685 2641 586.7
C 8 112 16390 23.43 2685 2641 586.7
C 13 61 16275 23.24 2685 2641 586.7
D 1 52 3984145 6467.06 2669 2569 615.7
D 10 199 864839 1400.54 2669 2569 615.7
D 10 50 671139 1085.92 2669 2569 615.7

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