ASTROSAT CZTI

Data Quality Report

Orbit 20160301_T01_043T01_9000000350_level2

Creation date: 2017-10-31T19:25:51.886541
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/AS1T01_043T01_9000000350cztM0_level2.evt modeM0/AS1T01_043T01_9000000350cztM0_level2_quad_clean.evt
Size (bytes)2,328,094,080342,305,280
Size2.2 GB 326.4 MB
Events in quadrant A13,957,3132,070,315
Events in quadrant B14,492,0352,130,765
Events in quadrant C16,639,6652,084,944
Events in quadrant D23,366,7791,992,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06200
B06200
C06200
D06200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0623410
B0629250
C0692250
D0911380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303905431.786772%
B303905071.668312%
C303906612.175058%
D3039028509.378085%

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 36154 30390 0 0 0.00% 0.00%
B 36154 30390 6 6 0.02% 0.02%
C 36154 30390 126 126 0.35% 0.41%
D 36154 30390 2125 2125 5.88% 6.99%

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 12 194 41452 51.71 3618 3541 733.1
A 0 226 40617 50.57 3618 3541 733.1
A 3 1 14937 15.54 3618 3541 733.1
B 8 3 195388 279.27 3660 3576 686.8
B 15 85 60030 82.2 3660 3576 686.8
B 12 111 48804 65.85 3660 3576 686.8
C 5 234 2267889 2774.67 3519 3535 816.1
C 9 247 329926 399.95 3519 3535 816.1
C 10 82 115948 137.75 3519 3535 816.1
D 9 66 9234586 11677.52 3377 3299 790.5
D 2 54 656853 826.74 3377 3299 790.5
D 10 102 248810 310.57 3377 3299 790.5

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