ASTROSAT CZTI

Data Quality Report

Orbit 20180503_A04_162T01_9000002074_level2

Creation date: 2018-05-08T16:35:55.036461
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/AS1A04_162T01_9000002074cztM0_level2_bc.evt modeM0/AS1A04_162T01_9000002074cztM0_level2_quad_clean.evt
Size (bytes)5,244,788,1602,364,508,800
Size4.9 GB 2.2 GB
Events in quadrant A28,154,54116,292,837
Events in quadrant B32,502,58416,460,306
Events in quadrant C28,336,95615,831,480
Events in quadrant D61,367,30114,503,747

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025320
B025320
C025320
D025320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02626900
B02813600
C02607250
D03810010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01950
B01950
C01950
D01950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12457912781.025855%
B12457925982.085424%
C12457910290.825982%
D1245791436911.534047%

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 143025 124587 27 27 0.02% 0.02%
B 143025 124581 89 89 0.06% 0.07%
C 143025 124584 23 23 0.02% 0.02%
D 143025 124560 4460 4460 3.12% 3.58%

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 12 189 1429101 998.45 6528 6423 1424.9
A 8 15 481663 333.53 6528 6423 1424.9
A 9 143 416912 288.08 6528 6423 1424.9
B 0 189 1653076 1315.34 6558 6396 1251.9
B 0 219 1409720 1120.95 6558 6396 1251.9
B 10 245 1223557 972.25 6558 6396 1251.9
C 3 233 3093690 2241.06 6263 6198 1377.7
C 0 207 552624 396.62 6263 6198 1377.7
C 14 220 74737 49.75 6263 6198 1377.7
D 1 52 24239885 15518.43 5974 5804 1561.6
D 8 195 4030513 2577.24 5974 5804 1561.6
D 12 110 2496395 1594.86 5974 5804 1561.6

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