ASTROSAT CZTI

Data Quality Report

Orbit 20161207_G06_139T02_9000000862_level2

Creation date: 2017-09-21T11:40:01.032426
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/AS1G06_139T02_9000000862cztM0_level2.evt modeM0/AS1G06_139T02_9000000862cztM0_level2_quad_clean.evt
Size (bytes)4,191,569,280718,352,640
Size3.9 GB 685.1 MB
Events in quadrant A33,044,9514,454,091
Events in quadrant B29,719,8004,488,872
Events in quadrant C28,707,1824,395,172
Events in quadrant D31,360,4234,242,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01393150
B01278480
C01272890
D01340690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012380
B012380
C012380
D012380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6090611191.837257%
B609069961.635307%
C609055480.899762%
D609069531.564706%

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 70436 60917 22 22 0.03% 0.04%
B 70436 60917 21 21 0.03% 0.03%
C 70436 60917 38 38 0.05% 0.06%
D 70436 60917 184 184 0.26% 0.30%

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 15 236 4327372 2900.9 7354 7199 1489.3
A 8 15 225084 146.3 7354 7199 1489.3
A 15 174 117290 73.92 7354 7199 1489.3
B 4 81 242196 166.97 7410 7249 1407.1
B 15 204 186614 127.47 7410 7249 1407.1
B 0 228 175097 119.28 7410 7249 1407.1
C 1 16 753636 453.54 7131 7173 1645.9
C 12 4 57804 30.76 7131 7173 1645.9
C 13 61 56093 29.72 7131 7173 1645.9
D 8 195 1073314 609.8 7149 6931 1748.7
D 2 152 1043675 592.85 7149 6931 1748.7
D 13 137 532460 300.52 7149 6931 1748.7

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