ASTROSAT CZTI

Data Quality Report

Orbit 20180524_G08_028T01_9000002112_level2

Creation date: 2018-05-26T21:25:06.433357
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/AS1G08_028T01_9000002112cztM0_level2_bc.evt modeM0/AS1G08_028T01_9000002112cztM0_level2_quad_clean.evt
Size (bytes)1,077,079,680356,832,000
Size1.0 GB 340.3 MB
Events in quadrant A5,808,1612,292,484
Events in quadrant B7,571,5522,259,048
Events in quadrant C6,801,0542,244,978
Events in quadrant D10,595,7852,156,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0564890
B0642860
C0578490
D0756310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269803161.171238%
B2698010904.040030%
C269803051.130467%
D2698017426.456635%

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 29411 26978 20 20 0.07% 0.07%
B 29411 26976 117 117 0.40% 0.43%
C 29411 26980 8 8 0.03% 0.03%
D 29411 26977 125 125 0.43% 0.46%

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 299047 975.23 1361 1330 305.3
A 4 2 190387 619.29 1361 1330 305.3
A 8 15 52687 168.23 1361 1330 305.3
B 10 16 1292995 4932.8 1341 1303 261.9
B 0 229 460045 1751.88 1341 1303 261.9
B 0 85 194793 738.91 1341 1303 261.9
C 3 233 1454050 4936.45 1319 1299 294.3
C 6 96 159134 536.32 1319 1299 294.3
C 14 234 20476 65.16 1319 1299 294.3
D 13 122 1573798 5139.65 1296 1257 306.0
D 5 222 1412476 4612.39 1296 1257 306.0
D 2 120 722882 2358.54 1296 1257 306.0

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