ASTROSAT CZTI

Data Quality Report

Orbit 20180103_G08_064T01_9000001814_level2

Creation date: 2018-08-03T16:28:14.551377
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/AS1G08_064T01_9000001814cztM0_level2_bc.evt modeM0/AS1G08_064T01_9000001814cztM0_level2_quad_clean.evt
Size (bytes)6,417,786,2401,872,097,920
Size6.0 GB 1.7 GB
Events in quadrant A48,900,06311,702,167
Events in quadrant B55,924,29711,557,499
Events in quadrant C32,186,27811,863,679
Events in quadrant D47,120,12511,281,269

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02370
B02370
C02370
D02370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03891200
B04475700
C03142580
D03663040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030640
B030640
C030640
D030640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15029249333.282277%
B1502931912512.725144%
C15029313130.873627%
D15029346633.102606%

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 173504 150300 279 279 0.16% 0.19%
B 173504 150198 522 522 0.30% 0.35%
C 173504 150296 60 60 0.03% 0.04%
D 173504 150293 881 881 0.51% 0.59%

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 13 251 8800426 5333.25 7571 7438 1648.7
A 8 15 4222390 2556.51 7571 7438 1648.7
A 14 237 1714032 1035.11 7571 7438 1648.7
B 4 239 16347244 12174.75 7102 6920 1342.1
B 0 85 5133066 3819.36 7102 6920 1342.1
B 3 64 2732745 2030.94 7102 6920 1342.1
C 15 208 1302217 796.3 7455 7361 1626.1
C 3 233 648055 394.01 7455 7361 1626.1
C 1 16 332854 200.17 7455 7361 1626.1
D 1 52 8923191 5164.11 7459 7198 1726.5
D 10 199 1285076 740.14 7459 7198 1726.5
D 12 221 1257084 723.93 7459 7198 1726.5

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