ASTROSAT CZTI

Data Quality Report

Orbit 20181121_T03_038T01_9000002530_level2

Creation date: 2018-11-26T17:42:23.839703
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/AS1T03_038T01_9000002530cztM0_level2_bc.evt modeM0/AS1T03_038T01_9000002530cztM0_level2_quad_clean.evt
Size (bytes)3,767,829,1201,562,685,120
Size3.5 GB 1.5 GB
Events in quadrant A21,674,29910,284,670
Events in quadrant B22,489,26010,477,194
Events in quadrant C32,674,8289,900,608
Events in quadrant D30,347,5769,705,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140010
B02151590
C02547230
D02429230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020800
B020800
C020800
D020800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10165413001.278848%
B10165413181.296555%
C10165426692.625573%
D10165434233.367305%

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 116619 101663 78 78 0.07% 0.08%
B 116619 101660 25 25 0.02% 0.02%
C 116619 101659 4 4 0.00% 0.00%
D 116619 101659 434 434 0.37% 0.43%

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 15 174 1231789 1079.96 5131 5035 1135.9
A 4 2 417980 363.53 5131 5035 1135.9
A 0 254 234214 201.75 5131 5035 1135.9
B 0 229 732562 743.59 5197 5062 978.4
B 3 64 499281 505.15 5197 5062 978.4
B 0 189 265959 266.67 5197 5062 978.4
C 3 233 13261215 11424.83 4922 4890 1160.3
C 7 247 277648 235.07 4922 4890 1160.3
C 9 160 83281 67.56 4922 4890 1160.3
D 1 52 7336712 6221.55 5008 4827 1178.5
D 5 222 1306119 1104.22 5008 4827 1178.5
D 10 70 1204692 1018.16 5008 4827 1178.5

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