ASTROSAT CZTI

Data Quality Report

Orbit 20170226_G06_114T01_9000001056_level2

Creation date: 2017-09-23T06:44:36.377784
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/AS1G06_114T01_9000001056cztM0_level2.evt modeM0/AS1G06_114T01_9000001056cztM0_level2_quad_clean.evt
Size (bytes)2,885,736,960536,342,400
Size2.7 GB 511.5 MB
Events in quadrant A19,375,2613,381,775
Events in quadrant B20,775,0223,411,657
Events in quadrant C20,031,4933,380,973
Events in quadrant D24,393,9893,204,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0856360
B0892090
C0873780
D01009830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08540
B08540
C08540
D08540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A417423760.900771%
B417426101.461358%
C417422740.656413%
D4174213853.318001%

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 47422 41750 0 0 0.00% 0.00%
B 47422 41750 64 64 0.13% 0.15%
C 47422 41750 40 40 0.08% 0.10%
D 47422 41750 966 966 2.04% 2.31%

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 0 226 47902 42.37 5007 4894 1015.0
A 12 194 44528 39.05 5007 4894 1015.0
A 15 174 29917 24.65 5007 4894 1015.0
B 10 245 283943 294.07 5025 4904 948.9
B 0 229 276884 286.63 5025 4904 948.9
B 4 239 213550 219.88 5025 4904 948.9
C 9 68 749777 656.09 4896 4934 1135.3
C 8 208 100809 84.45 4896 4934 1135.3
C 13 61 37902 29.04 4896 4934 1135.3
D 1 20 2039632 1710.83 4855 4711 1189.4
D 2 152 1499797 1256.97 4855 4711 1189.4
D 13 104 1441223 1207.73 4855 4711 1189.4

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