ASTROSAT CZTI

Data Quality Report

Orbit 20180601_A04_222T01_9000002132_level2

Creation date: 2018-07-18T15:43:09.266450
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_222T01_9000002132cztM0_level2_bc.evt modeM0/AS1A04_222T01_9000002132cztM0_level2_quad_clean.evt
Size (bytes)399,049,920212,558,400
Size380.6 MB 202.7 MB
Events in quadrant A2,361,4551,422,241
Events in quadrant B3,205,0471,436,990
Events in quadrant C2,514,2201,454,400
Events in quadrant D3,265,8961,381,505

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222070
B0263230
C0226200
D0254600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10728260.242356%
B107283873.607383%
C10728200.186428%
D107281951.817673%

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 13328 10727 0 0 0.00% 0.00%
B 13328 10727 3 3 0.02% 0.03%
C 13328 10727 0 0 0.00% 0.00%
D 13328 10727 13 13 0.10% 0.12%

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 95228 775.49 571 563 122.1
A 8 15 27755 222.75 571 563 122.1
A 4 2 10381 80.43 571 563 122.1
B 0 182 440352 3979.14 577 564 110.5
B 0 189 194736 1756.84 577 564 110.5
B 15 222 118812 1069.89 577 564 110.5
C 3 233 214745 1665.05 573 568 128.6
C 0 207 46380 356.15 573 568 128.6
C 7 247 8177 59.15 573 568 128.6
D 12 110 693353 4926.48 563 547 140.6
D 2 152 124769 883.33 563 547 140.6
D 10 199 106410 752.78 563 547 140.6

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