ASTROSAT CZTI

Data Quality Report

Orbit 20151127_P01_161T03_9000000178_level2

Creation date: 2017-10-26T20:47:20.120546
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/AS1P01_161T03_9000000178cztM0_level2.evt modeM0/AS1P01_161T03_9000000178cztM0_level2_quad_clean.evt
Size (bytes)8,113,610,880581,083,200
Size7.6 GB 554.2 MB
Events in quadrant A55,563,1863,745,829
Events in quadrant B74,025,1793,545,339
Events in quadrant C60,703,7503,589,317
Events in quadrant D52,387,1143,539,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09420
B09420
C09420
D09420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01978980
B02531510
C02134930
D01886350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A463122660.574365%
B4631143109.306644%
C4631216833.634047%
D463124981.075315%

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 51172 46320 1788 1788 3.49% 3.86%
B 51172 46320 9540 9540 18.64% 20.60%
C 51172 46320 3785 3785 7.40% 8.17%
D 51172 46320 1587 1587 3.10% 3.43%

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 14 170 164532 43.31 14417 14534 3463.0
A 15 233 67086 15.18 14417 14534 3463.0
A 15 127 58967 12.83 14417 14534 3463.0
B 3 0 16303156 4814.58 14448 14532 3383.2
B 8 38 1537834 450.26 14448 14532 3383.2
B 5 249 298568 83.96 14448 14532 3383.2
C 9 83 7183241 1898.36 13528 14024 3776.5
C 15 241 194662 47.83 13528 14024 3776.5
C 3 111 188343 46.16 13528 14024 3776.5
D 1 4 877233 219.0 13612 13910 3942.1
D 10 125 175548 41.0 13612 13910 3942.1
D 13 169 126703 28.61 13612 13910 3942.1

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