ASTROSAT CZTI

Data Quality Report

Orbit 20191021_A07_094T01_9000003248_level2

Creation date: 2019-10-24T10:50:19.904448
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_094T01_9000003248cztM0_level2_bc.evt modeM0/AS1A07_094T01_9000003248cztM0_level2_quad_clean.evt
Size (bytes)4,906,137,6001,684,451,520
Size4.6 GB 1.6 GB
Events in quadrant A27,500,59410,938,024
Events in quadrant B31,109,98210,959,913
Events in quadrant C25,423,22110,476,498
Events in quadrant D55,977,87410,018,278

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025720
B025720
C025720
D025720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02658310
B02801090
C02625830
D03648270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01870
B01870
C01870
D01870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12590114391.142962%
B12590124751.965830%
C12590118431.463849%
D12590173515.838715%

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 144987 125890 7 7 0.00% 0.01%
B 144987 125885 163 163 0.11% 0.13%
C 144987 125888 0 0 0.00% 0.00%
D 144987 125890 1511 1511 1.04% 1.20%

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 2 79 333568 218.16 6935 6813 1497.8
A 13 254 213390 137.92 6935 6813 1497.8
A 15 236 181435 116.59 6935 6813 1497.8
B 3 64 2364370 1831.67 6917 6751 1287.1
B 0 230 1012849 781.65 6917 6751 1287.1
B 0 190 339338 258.39 6917 6751 1287.1
C 9 54 41144 22.5 6585 6560 1537.2
C 13 61 38228 20.6 6585 6560 1537.2
C 0 10 34894 18.43 6585 6560 1537.2
D 7 238 16287788 10684.59 6650 6424 1523.8
D 1 52 6437206 4220.18 6650 6424 1523.8
D 5 222 2193791 1435.45 6650 6424 1523.8

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