ASTROSAT CZTI

Data Quality Report

Orbit 20190502_A05_212T09_9000002886_level2

Creation date: 2019-05-03T10:35:00.318862
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/AS1A05_212T09_9000002886cztM0_level2_bc.evt modeM0/AS1A05_212T09_9000002886cztM0_level2_quad_clean.evt
Size (bytes)545,042,880202,129,920
Size519.8 MB 192.8 MB
Events in quadrant A3,524,7751,318,153
Events in quadrant B3,626,0451,319,270
Events in quadrant C3,241,9201,247,273
Events in quadrant D5,126,6301,243,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310190
B0314860
C0306290
D0360670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143941400.972627%
B143941821.264416%
C143941941.347784%
D143943372.341253%

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 16913 14391 0 0 0.00% 0.00%
B 16913 14391 4 4 0.02% 0.03%
C 16913 14391 0 0 0.00% 0.00%
D 16913 14391 87 87 0.51% 0.60%

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 5 16 128533 685.46 872 860 186.3
A 13 254 20801 107.06 872 860 186.3
A 12 96 15698 79.66 872 860 186.3
B 7 220 124754 781.12 860 843 158.6
B 0 198 53694 333.17 860 843 158.6
B 3 64 37607 231.76 860 843 158.6
C 3 233 88917 461.59 817 815 190.9
C 9 221 7530 35.18 817 815 190.9
C 13 61 4730 20.51 817 815 190.9
D 1 52 1483062 7640.66 855 829 194.0
D 7 238 230109 1181.9 855 829 194.0
D 7 96 57140 290.27 855 829 194.0

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