ASTROSAT CZTI

Data Quality Report

Orbit 20160113_G02_025T02_9000000270_level2

Creation date: 2017-10-27T03:43:02.837338
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/AS1G02_025T02_9000000270cztM0_level2.evt modeM0/AS1G02_025T02_9000000270cztM0_level2_quad_clean.evt
Size (bytes)13,602,847,6801,046,715,840
Size12.7 GB 998.2 MB
Events in quadrant A101,878,1686,542,800
Events in quadrant B106,119,1776,580,413
Events in quadrant C98,528,3046,450,319
Events in quadrant D99,800,1316,261,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017500
B017500
C017500
D017500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03634160
B03759540
C03538660
D03580550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270
B01270
C01270
D01270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A855995990.699775%
B855995800.677578%
C855994990.582951%
D8559924642.878538%

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 104275 85610 3195 3195 3.06% 3.73%
B 104275 85611 3580 3580 3.43% 4.18%
C 104275 85611 2727 2727 2.62% 3.19%
D 104275 85612 5266 5266 5.05% 6.15%

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 8 14 106430 12.45 26604 26845 6392.8
A 15 236 78308 8.05 26604 26845 6392.8
A 8 15 76109 7.71 26604 26845 6392.8
B 0 234 354812 50.35 27762 27969 6491.3
B 4 80 236245 32.09 27762 27969 6491.3
B 7 205 191886 25.25 27762 27969 6491.3
C 8 229 225731 28.59 25153 26019 6984.9
C 1 192 112258 12.35 25153 26019 6984.9
C 7 159 101989 10.88 25153 26019 6984.9
D 13 53 2008000 275.29 24794 25220 7202.4
D 13 105 1656804 226.53 24794 25220 7202.4
D 10 84 1428850 194.88 24794 25220 7202.4

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