ASTROSAT CZTI

Data Quality Report

Orbit 20171013_C03_006T01_9000001608_level2

Creation date: 2017-10-18T12:51:19.072572
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/AS1C03_006T01_9000001608cztM0_level2.evt modeM0/AS1C03_006T01_9000001608cztM0_level2_quad_clean.evt
Size (bytes)6,123,646,080809,372,160
Size5.7 GB 771.9 MB
Events in quadrant A60,422,7104,844,980
Events in quadrant B45,569,7115,065,088
Events in quadrant C31,806,1045,108,161
Events in quadrant D43,073,5104,819,003

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013880
B013880
C013880
D013880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02253190
B01797120
C01407680
D01727830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68164805511.817088%
B6816435925.269644%
C681645120.751130%
D6816416442.411830%

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 79064 68172 5411 5411 6.84% 7.94%
B 79064 68175 1646 1646 2.08% 2.41%
C 79064 68176 20 20 0.03% 0.03%
D 79064 68175 929 929 1.17% 1.36%

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 14 238 20782900 12790.73 8046 7877 1624.2
A 15 174 5473966 3365.35 8046 7877 1624.2
A 13 210 3080967 1892.03 8046 7877 1624.2
B 4 239 11913777 7637.44 8281 8093 1558.9
B 0 214 308279 192.57 8281 8093 1558.9
B 15 204 274484 170.89 8281 8093 1558.9
C 9 54 114157 56.83 8112 8164 1864.9
C 13 61 60469 28.05 8112 8164 1864.9
C 8 222 40144 17.15 8112 8164 1864.9
D 1 52 3987204 2061.64 8032 7819 1930.2
D 11 129 1981112 1022.32 8032 7819 1930.2
D 8 195 1878621 969.22 8032 7819 1930.2

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