ASTROSAT CZTI

Data Quality Report

Orbit 20170511_A03_038T01_9000001218_level2

Creation date: 2017-09-23T22:09:08.602737
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_038T01_9000001218cztM0_level2.evt modeM0/AS1A03_038T01_9000001218cztM0_level2_quad_clean.evt
Size (bytes)6,455,494,0801,163,355,840
Size6.0 GB 1.1 GB
Events in quadrant A43,272,8857,396,709
Events in quadrant B42,330,1887,482,291
Events in quadrant C41,480,0457,387,867
Events in quadrant D62,396,4196,847,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018280
B018240
C018240
D018280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01430
D01450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01879570
B01856280
C01847430
D02472150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8934112501.399134%
B8936012781.430170%
C893628430.943354%
D8912068787.717684%

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 104358 89786 94 94 0.09% 0.10%
B 104358 89814 62 62 0.06% 0.07%
C 104358 89821 41 41 0.04% 0.05%
D 104357 89576 5726 5726 5.49% 6.39%

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 13 251 952336 436.37 10738 10515 2158.3
A 5 16 364933 164.21 10738 10515 2158.3
A 8 5 325277 145.84 10738 10515 2158.3
B 10 16 421789 201.52 10759 10503 2040.9
B 12 111 229529 107.32 10759 10503 2040.9
B 11 111 186153 86.06 10759 10503 2040.9
C 9 54 199799 78.09 10494 10555 2423.5
C 9 68 111910 41.82 10494 10555 2423.5
C 13 61 78690 28.11 10494 10555 2423.5
D 2 16 14682105 5838.29 10079 9821 2513.1
D 2 152 4055165 1609.69 10079 9821 2513.1
D 1 52 3140758 1245.84 10079 9821 2513.1

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