ASTROSAT CZTI

Data Quality Report

Orbit 20191016_A07_010T06_9000003238_level2

Creation date: 2019-10-17T11:24:04.249796
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/AS1A07_010T06_9000003238cztM0_level2_bc.evt modeM0/AS1A07_010T06_9000003238cztM0_level2_quad_clean.evt
Size (bytes)1,028,874,240335,767,680
Size981.2 MB 320.2 MB
Events in quadrant A4,533,9312,344,664
Events in quadrant B4,644,4222,397,605
Events in quadrant C5,061,8552,168,522
Events in quadrant D15,651,9591,981,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403100
B0406520
C0449470
D0773690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185372901.564439%
B185372801.510493%
C1853710355.583428%
D18537435623.498948%

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 23632 18534 9 9 0.04% 0.05%
B 23632 18535 4 4 0.02% 0.02%
C 23632 18535 37 37 0.16% 0.20%
D 23632 18534 1631 1631 6.90% 8.80%

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 228334 968.04 1094 1082 234.8
A 4 2 81403 342.15 1094 1082 234.8
A 13 254 31975 131.6 1094 1082 234.8
B 3 64 142975 678.8 1115 1094 209.0
B 4 173 41441 193.03 1115 1094 209.0
B 0 190 40051 186.38 1115 1094 209.0
C 10 22 1143202 4805.08 1014 1016 237.7
C 0 10 13630 53.07 1014 1016 237.7
C 4 175 7720 28.2 1014 1016 237.7
D 7 238 11366347 51296.15 951 924 221.6
D 12 227 240600 1081.74 951 924 221.6
D 1 52 100148 447.83 951 924 221.6

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