ASTROSAT CZTI

Data Quality Report

Orbit 20170622_A03_057T01_9000001330_level2

Creation date: 2017-09-24T06:54:38.957141
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/AS1A03_057T01_9000001330cztM0_level2.evt modeM0/AS1A03_057T01_9000001330cztM0_level2_quad_clean.evt
Size (bytes)3,591,129,600728,893,440
Size3.3 GB 695.1 MB
Events in quadrant A29,692,7544,723,480
Events in quadrant B24,403,5224,782,826
Events in quadrant C22,418,7894,649,207
Events in quadrant D28,853,2364,475,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010280
B010240
C010260
D010230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01219790
B01064550
C01028400
D01202510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501267091.414436%
B503004900.974155%
C503292420.480836%
D5017910052.002830%

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 62639 50867 125 125 0.20% 0.25%
B 62639 51002 22 22 0.04% 0.04%
C 62639 51056 1 1 0.00% 0.00%
D 62639 50913 563 563 0.90% 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 8 5 5372856 4539.5 5896 5773 1182.3
A 1 162 544577 455.72 5896 5773 1182.3
A 13 251 241729 199.57 5896 5773 1182.3
B 0 214 435069 386.4 5966 5824 1110.9
B 0 219 292033 257.64 5966 5824 1110.9
B 4 173 157905 136.9 5966 5824 1110.9
C 13 61 43413 28.74 5722 5738 1310.7
C 10 22 35359 22.6 5722 5738 1310.7
C 8 128 22301 12.64 5722 5738 1310.7
D 1 52 3938492 2691.82 5637 5499 1461.1
D 12 233 1100234 749.26 5637 5499 1461.1
D 8 195 1050049 714.91 5637 5499 1461.1

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