ASTROSAT CZTI

Data Quality Report

Orbit 20170406_G07_070T01_9000001138_level2

Creation date: 2017-09-23T15:20:15.068876
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/AS1G07_070T01_9000001138cztM0_level2.evt modeM0/AS1G07_070T01_9000001138cztM0_level2_quad_clean.evt
Size (bytes)2,577,476,160495,806,400
Size2.4 GB 472.8 MB
Events in quadrant A17,866,4453,183,347
Events in quadrant B18,698,4503,206,570
Events in quadrant C17,023,1083,152,591
Events in quadrant D22,053,6493,015,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764800
B0779450
C0752720
D0902890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07300
B07300
C07300
D07300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358225801.619117%
B358235821.624655%
C358233841.071937%
D3582312853.587081%

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 43358 35826 121 121 0.28% 0.34%
B 43358 35826 82 82 0.19% 0.23%
C 43358 35826 0 0 0.00% 0.00%
D 43358 35825 855 855 1.97% 2.39%

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 5 16 663868 752.33 4366 4268 876.7
A 15 79 211857 236.77 4366 4268 876.7
A 8 15 136316 150.61 4366 4268 876.7
B 11 51 578479 700.03 4369 4270 820.3
B 0 214 417238 503.45 4369 4270 820.3
B 10 16 365399 440.26 4369 4270 820.3
C 9 68 458387 470.43 4205 4222 965.4
C 1 16 134442 134.88 4205 4222 965.4
C 13 61 32676 29.47 4205 4222 965.4
D 1 52 3612063 3508.01 4199 4070 1028.5
D 13 105 2044128 1983.52 4199 4070 1028.5
D 2 14 140990 133.13 4199 4070 1028.5

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