ASTROSAT CZTI

Data Quality Report

Orbit 20161122_A02_151T01_9000000818_level2

Creation date: 2017-09-19T05:13:25.924662
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/AS1A02_151T01_9000000818cztM0_level2.evt modeM0/AS1A02_151T01_9000000818cztM0_level2_quad_clean.evt
Size (bytes)7,302,147,8401,399,685,760
Size6.8 GB 1.3 GB
Events in quadrant A50,506,6628,894,962
Events in quadrant B55,560,3918,907,224
Events in quadrant C47,142,5098,816,928
Events in quadrant D60,685,5628,412,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021900
B021940
C021920
D021940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02246690
B02390310
C02193900
D02555400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710
B01730
C01730
D01730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10746113001.209741%
B10745026692.483946%
C1074677880.733248%
D10738124352.267626%

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 157955 107734 79 79 0.05% 0.07%
B 157955 107706 1114 1114 0.71% 1.03%
C 157954 107724 0 0 0.00% 0.00%
D 157955 107615 1333 1333 0.84% 1.24%

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 1535085 608.6 12422 12168 2502.3
A 8 15 619014 242.51 12422 12168 2502.3
A 14 111 243207 92.33 12422 12168 2502.3
B 3 64 4899324 2057.33 12488 12187 2375.5
B 0 219 1300809 542.47 12488 12187 2375.5
B 15 204 348079 141.4 12488 12187 2375.5
C 13 61 95200 30.01 12073 12120 2768.7
C 8 222 41113 10.47 12073 12120 2768.7
C 3 202 30730 6.72 12073 12120 2768.7
D 12 220 6097833 2098.53 11989 11619 2900.2
D 2 63 3500522 1202.98 11989 11619 2900.2
D 11 241 1974818 676.91 11989 11619 2900.2

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