ASTROSAT CZTI

Data Quality Report

Orbit 20170227_A02_029T01_9000001058_level2

Creation date: 2017-09-23T06:56:30.805779
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/AS1A02_029T01_9000001058cztM0_level2.evt modeM0/AS1A02_029T01_9000001058cztM0_level2_quad_clean.evt
Size (bytes)5,155,813,440635,250,240
Size4.8 GB 605.8 MB
Events in quadrant A25,431,8304,083,142
Events in quadrant B27,610,5564,124,526
Events in quadrant C66,741,7103,487,010
Events in quadrant D32,737,8863,847,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010980
B010980
C010980
D010980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01111290
B01165680
C02343690
D01330810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538378071.498969%
B5383711742.180656%
C538371592729.583744%
D5383718093.360143%

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 61377 53848 3 3 0.00% 0.01%
B 61377 53847 175 175 0.29% 0.32%
C 61377 53846 12901 12901 21.02% 23.96%
D 61377 53848 916 916 1.49% 1.70%

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 0 226 63720 43.3 6567 6426 1323.1
A 12 194 58463 39.33 6567 6426 1323.1
A 13 248 41478 26.49 6567 6426 1323.1
B 4 239 662582 526.84 6580 6422 1245.5
B 4 173 320624 252.28 6580 6422 1245.5
B 0 214 295182 231.85 6580 6422 1245.5
C 9 68 44491735 34051.0 5634 5668 1306.5
C 8 208 159666 117.87 5634 5668 1306.5
C 1 3 57914 39.99 5634 5668 1306.5
D 2 152 3207054 2079.59 6358 6162 1539.2
D 12 0 1839479 1191.09 6358 6162 1539.2
D 13 104 1240507 801.94 6358 6162 1539.2

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