ASTROSAT CZTI

Data Quality Report

Orbit 20181103_A05_004T05_9000002488_level2

Creation date: 2018-11-28T16:26:21.288404
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/AS1A05_004T05_9000002488cztM0_level2_bc.evt modeM0/AS1A05_004T05_9000002488cztM0_level2_quad_clean.evt
Size (bytes)2,871,921,600737,916,480
Size2.7 GB 703.7 MB
Events in quadrant A14,645,6154,831,557
Events in quadrant B13,675,0984,891,125
Events in quadrant C21,517,6704,674,118
Events in quadrant D33,382,2024,164,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01283140
B01227600
C01579900
D02003900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011240
B011240
C011240
D011240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5518620943.794441%
B551868931.618164%
C5518520043.631422%
D55182912916.543438%

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 75104 55189 164 164 0.22% 0.30%
B 75104 55191 26 26 0.03% 0.05%
C 75104 55187 9 9 0.01% 0.02%
D 75104 55185 1437 1437 1.91% 2.60%

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 15 174 3304340 5249.47 2922 2868 628.9
A 14 4 77817 119.17 2922 2868 628.9
A 3 1 43117 64.0 2922 2868 628.9
B 15 35 725574 1308.37 2950 2879 552.4
B 5 236 267241 478.6 2950 2879 552.4
B 3 209 239809 428.94 2950 2879 552.4
C 3 233 9616892 14608.97 2810 2798 658.1
C 0 207 1058637 1604.39 2810 2798 658.1
C 7 247 46693 66.7 2810 2798 658.1
D 1 52 13727282 22112.01 2693 2599 620.7
D 12 110 4108931 6615.76 2693 2599 620.7
D 13 232 1947588 3133.6 2693 2599 620.7

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