ASTROSAT CZTI

Data Quality Report

Orbit 20180528_A04_186T01_9000002126_level2

Creation date: 2018-05-30T09:33:18.197836
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_186T01_9000002126cztM0_level2_bc.evt modeM0/AS1A04_186T01_9000002126cztM0_level2_quad_clean.evt
Size (bytes)1,329,171,840458,069,760
Size1.2 GB 436.8 MB
Events in quadrant A6,789,2573,043,484
Events in quadrant B7,478,8862,954,934
Events in quadrant C10,553,6712,914,865
Events in quadrant D13,328,5042,842,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0645020
B0684070
C0800850
D0922920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06260
B06260
C06260
D06260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A308522180.706599%
B308525051.636847%
C308523391.098794%
D3085224687.999481%

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 36193 30849 4 4 0.01% 0.01%
B 36193 30850 6 6 0.02% 0.02%
C 36193 30853 10 10 0.03% 0.03%
D 36193 30851 136 136 0.38% 0.44%

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 242857 668.03 1611 1583 361.2
A 8 15 216159 594.11 1611 1583 361.2
A 4 2 86491 235.09 1611 1583 361.2
B 0 85 310679 1020.73 1579 1535 302.9
B 0 229 288268 946.73 1579 1535 302.9
B 0 189 233343 765.38 1579 1535 302.9
C 3 233 4421116 13006.0 1532 1517 339.8
C 0 207 120943 351.45 1532 1517 339.8
C 14 234 10331 25.94 1532 1517 339.8
D 13 122 4399176 11820.18 1530 1483 372.0
D 10 199 948852 2546.35 1530 1483 372.0
D 12 110 557510 1494.5 1530 1483 372.0

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