ASTROSAT CZTI

Data Quality Report

Orbit 20190210_C04_001T01_9000002716_level2

Creation date: 2019-02-11T18:03:09.433750
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/AS1C04_001T01_9000002716cztM0_level2_bc.evt modeM0/AS1C04_001T01_9000002716cztM0_level2_quad_clean.evt
Size (bytes)2,987,156,1601,411,133,760
Size2.8 GB 1.3 GB
Events in quadrant A19,223,4659,661,929
Events in quadrant B16,457,9429,938,385
Events in quadrant C14,872,0889,451,839
Events in quadrant D34,765,0678,514,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015440
B015440
C015440
D015440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01755510
B01578130
C01542080
D02441520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7548730414.028508%
B754877791.031966%
C754878301.099527%
D75487953312.628665%

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 87912 75479 67 67 0.08% 0.09%
B 87910 75485 10 10 0.01% 0.01%
C 87910 75485 0 0 0.00% 0.00%
D 87910 75484 916 916 1.04% 1.21%

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 15 174 4189657 4890.34 3885 3823 855.9
A 13 210 61874 67.82 3885 3823 855.9
A 11 29 44699 47.76 3885 3823 855.9
B 7 220 322973 428.22 3963 3876 745.2
B 3 64 291142 385.5 3963 3876 745.2
B 0 189 154887 202.65 3963 3876 745.2
C 3 233 308210 341.67 3766 3743 891.1
C 7 174 55895 58.52 3766 3743 891.1
C 13 61 22279 20.8 3766 3743 891.1
D 7 238 10817219 12766.13 3569 3446 847.1
D 5 222 4006388 4725.65 3569 3446 847.1
D 1 52 3724931 4393.37 3569 3446 847.1

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