ASTROSAT CZTI

Data Quality Report

Orbit 20170612_A03_051T01_9000001288_level2

Creation date: 2021-08-27T01:02:39.840123
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A03_051T01_9000001288cztM0_level2_bc.evt modeM0/AS1A03_051T01_9000001288cztM0_level2_quad_clean.evt
Size (bytes)2,461,020,480829,572,480
Size2.3 GB 791.1 MB
Events in quadrant A21,616,1405,132,400
Events in quadrant B17,464,5305,187,920
Events in quadrant C13,396,5855,096,452
Events in quadrant D17,324,5804,952,681

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014120
B014280
C014100
D014120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720510
B01551080
C01420600
D01528790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01100
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6922420352.939732%
B6938017392.506486%
C694296190.891558%
D6930710371.496241%

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 82364 70572 19 19 0.02% 0.03%
B 82364 70686 285 285 0.35% 0.40%
C 82363 70688 1 1 0.00% 0.00%
D 82364 70640 52 52 0.06% 0.07%

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 5 5928660 7815.87 3455 3385 758.1
A 15 174 849973 1116.71 3455 3385 758.1
A 1 162 585680 768.09 3455 3385 758.1
B 6 51 1900836 2836.75 3498 3396 668.9
B 8 234 410014 607.91 3498 3396 668.9
B 0 214 381235 564.88 3498 3396 668.9
C 12 4 46569 58.61 3384 3324 737.8
C 14 67 42143 52.61 3384 3324 737.8
C 8 222 39421 48.92 3384 3324 737.8
D 1 52 1920775 2177.44 3392 3280 880.6
D 7 71 761802 861.35 3392 3280 880.6
D 12 233 374294 421.31 3392 3280 880.6

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