ASTROSAT CZTI

Data Quality Report

Orbit 20160724_G05_253T01_9000000560_level2

Creation date: 2017-10-17T19:29:45.642834
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/AS1G05_253T01_9000000560cztM0_level2.evt modeM0/AS1G05_253T01_9000000560cztM0_level2_quad_clean.evt
Size (bytes)7,932,528,0001,448,542,080
Size7.4 GB 1.3 GB
Events in quadrant A55,696,0099,033,307
Events in quadrant B57,561,9799,071,204
Events in quadrant C54,435,2239,102,093
Events in quadrant D64,667,2938,672,014

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01770
C01780
D01780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023820
B023880
C023860
D023810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02482430
B02493900
C02447830
D02769330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11663819901.706134%
B11665916591.422093%
C11675010800.925054%
D11661139813.413915%

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 147129 117737 443 443 0.30% 0.38%
B 147129 117750 153 153 0.10% 0.13%
C 147129 117813 150 150 0.10% 0.13%
D 147129 117697 2646 2646 1.80% 2.25%

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 13 2304438 844.79 13437 13148 2712.2
A 0 50 861202 312.68 13437 13148 2712.2
A 0 118 320818 113.44 13437 13148 2712.2
B 15 204 1311313 504.6 13619 13305 2572.4
B 14 167 1074554 412.56 13619 13305 2572.4
B 4 48 756875 289.06 13619 13305 2572.4
C 14 48 1461379 481.65 13119 13169 3006.8
C 9 16 1046042 343.52 13119 13169 3006.8
C 9 247 400980 128.98 13119 13169 3006.8
D 12 233 4183836 1345.72 12920 12538 3099.7
D 13 235 3135852 1007.63 12920 12538 3099.7
D 2 136 2238476 718.12 12920 12538 3099.7

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