ASTROSAT CZTI

Data Quality Report

Orbit 20151223_G04_003T02_9000000228_level2

Creation date: 2016-09-06T17:56:10.599946
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/AS1G04_003T02_9000000228cztM0_level2_bc.evt modeM0/AS1G04_003T02_9000000228cztM0_level2_quad_clean.evt
Size (bytes)688,216,320203,250,240
Size656.3 MB 193.8 MB
Events in quadrant A2,409,8441,348,803
Events in quadrant B3,244,7231,354,205
Events in quadrant C3,424,0471,342,432
Events in quadrant D10,827,3971,165,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0557230
B0614280
C0575610
D0991100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1366150.036601%
B13661820.600249%
C13661360.263524%
D13661285020.862309%

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 16966 13661 0 0 0.00% 0.00%
B 16966 13660 4 4 0.02% 0.03%
C 16966 13658 0 0 0.00% 0.00%
D 16966 13658 8 8 0.05% 0.06%

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 12 243 30812 232.55 611 599 129.9
A 13 9 12627 92.58 611 599 129.9
A 13 235 8289 59.19 611 599 129.9
B 8 4 424483 3774.02 623 605 112.3
B 6 53 123560 1094.74 623 605 112.3
B 12 52 114186 1011.27 623 605 112.3
C 15 241 645637 5031.9 603 592 128.2
C 8 208 261085 2032.07 603 592 128.2
C 9 52 48354 372.58 603 592 128.2
D 13 169 6560656 54518.0 541 526 120.3
D 10 84 1460629 12134.19 541 526 120.3
D 12 22 229142 1899.91 541 526 120.3

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