ASTROSAT CZTI

Data Quality Report

Orbit 20170924_G07_057T03_9000001552_level2

Creation date: 2017-10-18T16:08:59.609621
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_057T03_9000001552cztM0_level2.evt modeM0/AS1G07_057T03_9000001552cztM0_level2_quad_clean.evt
Size (bytes)2,027,793,600449,464,320
Size1.9 GB 428.6 MB
Events in quadrant A12,155,7833,043,775
Events in quadrant B19,528,8232,971,953
Events in quadrant C10,698,9043,123,401
Events in quadrant D17,475,5552,888,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0515460
B0732730
C0473060
D0678120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230584922.133750%
B23058259411.249892%
C230581940.841357%
D2305810884.718536%

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 29123 23062 137 137 0.47% 0.59%
B 29123 23061 1502 1502 5.16% 6.51%
C 29123 23063 1 1 0.00% 0.00%
D 29123 23063 788 788 2.71% 3.42%

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 15 239 582577 1062.0 2758 2708 546.0
A 15 223 446326 812.46 2758 2708 546.0
A 15 174 137345 246.58 2758 2708 546.0
B 0 85 4295849 8703.76 2694 2631 493.3
B 4 239 4244691 8600.05 2694 2631 493.3
B 15 204 208156 416.67 2694 2631 493.3
C 13 61 20452 28.78 2735 2748 615.2
C 8 222 13002 16.67 2735 2748 615.2
C 14 234 10496 12.59 2735 2748 615.2
D 10 157 2084961 3314.34 2675 2604 628.3
D 10 199 1638308 2603.44 2675 2604 628.3
D 1 52 1248887 1983.62 2675 2604 628.3

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