ASTROSAT CZTI

Data Quality Report

Orbit 20191119_T03_156T01_9000003312_level2

Creation date: 2019-11-21T10:37:42.087802
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/AS1T03_156T01_9000003312cztM0_level2_bc.evt modeM0/AS1T03_156T01_9000003312cztM0_level2_quad_clean.evt
Size (bytes)1,442,684,160581,322,240
Size1.3 GB 554.4 MB
Events in quadrant A9,324,0423,705,646
Events in quadrant B9,823,4493,768,293
Events in quadrant C9,112,5893,602,097
Events in quadrant D12,402,9613,485,749

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09100
B09100
C09100
D09100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0916350
B0932640
C0922860
D01001690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A443613690.831812%
B443615441.226302%
C443616251.408895%
D443614841.091048%

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 52666 44360 0 0 0.00% 0.00%
B 52666 44358 4 4 0.01% 0.01%
C 52666 44361 1 1 0.00% 0.00%
D 52666 44362 59 59 0.11% 0.13%

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 13 254 61702 114.72 2407 2372 517.2
A 3 1 31951 57.2 2407 2372 517.2
A 0 226 15422 25.23 2407 2372 517.2
B 3 64 140044 304.94 2441 2387 451.4
B 0 190 102405 221.56 2441 2387 451.4
B 0 229 69059 147.69 2441 2387 451.4
C 10 22 62317 108.7 2343 2335 551.8
C 0 10 31705 53.23 2343 2335 551.8
C 13 61 13562 20.35 2343 2335 551.8
D 1 52 1532938 2785.83 2367 2288 549.4
D 12 227 646979 1173.36 2367 2288 549.4
D 7 223 537822 974.69 2367 2288 549.4

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