ASTROSAT CZTI

Data Quality Report

Orbit 20160126_G02_020T02_9000000294_level2

Creation date: 2017-10-26T18:10:01.657339
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_020T02_9000000294cztM0_level2.evt modeM0/AS1G02_020T02_9000000294cztM0_level2_quad_clean.evt
Size (bytes)2,608,937,280236,064,960
Size2.4 GB 225.1 MB
Events in quadrant A20,029,8071,508,464
Events in quadrant B19,837,7211,550,195
Events in quadrant C19,157,5211,506,145
Events in quadrant D18,900,7721,450,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B120
C120
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0711460
B0705560
C0686040
D0678960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1644660.036483%
B16442120.072984%
C16444230.139869%
D16446370.224979%

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 19636 16449 380 380 1.94% 2.31%
B 19636 16447 330 330 1.68% 2.01%
C 19636 16448 278 278 1.42% 1.69%
D 19636 16449 289 289 1.47% 1.76%

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 0 231 761033 628.61 5037 5054 1202.6
A 15 22 13945 7.39 5037 5054 1202.6
A 10 2 12782 6.43 5037 5054 1202.6
B 0 234 37372 26.37 5214 5241 1218.6
B 15 85 26463 17.41 5214 5241 1218.6
B 7 202 21140 13.05 5214 5241 1218.6
C 8 208 171071 123.54 4855 5043 1343.9
C 9 236 33291 21.02 4855 5043 1343.9
C 12 4 14972 7.39 4855 5043 1343.9
D 7 85 856298 586.86 4721 4911 1450.8
D 2 16 104812 68.86 4721 4911 1450.8
D 10 102 80528 52.12 4721 4911 1450.8

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