ASTROSAT CZTI

Data Quality Report

Orbit 20190821_A05_075T05_9000003116_level2

Creation date: 2019-08-26T11:06:49.295133
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_075T05_9000003116cztM0_level2_bc.evt modeM0/AS1A05_075T05_9000003116cztM0_level2_quad_clean.evt
Size (bytes)3,248,691,840901,488,960
Size3.0 GB 859.7 MB
Events in quadrant A15,168,6655,899,717
Events in quadrant B17,350,5375,952,477
Events in quadrant C14,014,0035,705,769
Events in quadrant D47,103,1644,960,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014180
B014180
C014180
D014180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01457580
B01540220
C01442210
D02585480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697847021.005961%
B6978411771.686633%
C697848831.265333%
D697841209317.329187%

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 81455 69786 3 3 0.00% 0.00%
B 81455 69783 22 22 0.03% 0.03%
C 81455 69785 1 1 0.00% 0.00%
D 81455 69752 4776 4776 5.86% 6.85%

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 14 254 497403 616.66 3697 3628 800.7
A 12 96 194545 238.43 3697 3628 800.7
A 15 192 107899 130.22 3697 3628 800.7
B 0 219 779239 1105.56 3733 3642 701.5
B 7 220 670740 950.91 3733 3642 701.5
B 3 64 425128 600.8 3733 3642 701.5
C 9 54 275719 320.49 3571 3554 849.2
C 13 61 20496 19.95 3571 3554 849.2
C 14 238 12129 10.1 3571 3554 849.2
D 1 239 25293546 32799.45 3289 3173 771.1
D 1 52 4328540 5609.63 3289 3173 771.1
D 7 238 1097121 1418.76 3289 3173 771.1

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