ASTROSAT CZTI

Data Quality Report

Orbit 20180910_T02_087T01_9000002352_level2

Creation date: 2018-09-12T10:52:13.586201
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_087T01_9000002352cztM0_level2_bc.evt modeM0/AS1T02_087T01_9000002352cztM0_level2_quad_clean.evt
Size (bytes)3,045,064,3201,228,296,960
Size2.8 GB 1.1 GB
Events in quadrant A20,292,9997,849,559
Events in quadrant B24,667,6977,868,624
Events in quadrant C19,671,9747,542,295
Events in quadrant D21,101,1057,423,569

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019360
B019360
C019360
D019360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02008700
B02137240
C02001190
D02011370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9516214181.490091%
B9516221982.309745%
C9516217251.812698%
D951629440.991993%

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 109233 95154 73 73 0.07% 0.08%
B 109233 95152 250 250 0.23% 0.26%
C 109233 95154 10 10 0.01% 0.01%
D 109233 95156 14 14 0.01% 0.01%

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 15 239 734287 671.7 4954 4848 1086.0
A 9 143 156992 140.1 4954 4848 1086.0
A 13 210 115536 101.93 4954 4848 1086.0
B 10 245 1581916 1658.91 4991 4855 950.7
B 5 65 861778 901.4 4991 4855 950.7
B 15 222 456618 475.21 4991 4855 950.7
C 3 233 619966 556.55 4743 4715 1105.5
C 9 236 588775 528.34 4743 4715 1105.5
C 7 247 85710 73.27 4743 4715 1105.5
D 12 110 1152742 1031.41 4846 4669 1113.1
D 2 152 387528 343.95 4846 4669 1113.1
D 2 234 371270 329.35 4846 4669 1113.1

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