ASTROSAT CZTI

Data Quality Report

Orbit 20180721_T02_070T01_9000002244_level2

Creation date: 2018-07-23T12:06:34.648799
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/AS1T02_070T01_9000002244cztM0_level2_bc.evt modeM0/AS1T02_070T01_9000002244cztM0_level2_quad_clean.evt
Size (bytes)337,982,400111,381,120
Size322.3 MB 106.2 MB
Events in quadrant A2,056,571683,022
Events in quadrant B2,294,398688,492
Events in quadrant C3,017,644670,908
Events in quadrant D2,192,019651,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202840
B0220050
C0234360
D0206670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97911011.031560%
B97913053.115106%
C9791960.980492%
D97911121.143908%

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 11506 9799 0 0 0.00% 0.00%
B 11506 9800 1 1 0.01% 0.01%
C 11506 9799 0 0 0.00% 0.00%
D 11506 9799 13 13 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 12 189 131629 1187.6 494 483 110.4
A 9 143 9626 82.8 494 483 110.4
A 13 248 7417 62.79 494 483 110.4
B 3 64 169336 1774.18 492 478 95.2
B 10 245 58930 614.15 492 478 95.2
B 0 189 42984 446.61 492 478 95.2
C 3 233 964004 8960.83 480 473 107.5
C 7 247 172610 1600.87 480 473 107.5
C 14 234 3666 29.69 480 473 107.5
D 2 33 145638 1270.3 486 465 114.3
D 7 38 37767 326.4 486 465 114.3
D 2 234 37062 320.23 486 465 114.3

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