ASTROSAT CZTI

Data Quality Report

Orbit 20190922_T03_138T07_9000003186_level2

Creation date: 2019-09-23T11:30:51.320849
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/AS1T03_138T07_9000003186cztM0_level2_bc.evt modeM0/AS1T03_138T07_9000003186cztM0_level2_quad_clean.evt
Size (bytes)176,071,68072,273,600
Size167.9 MB 68.9 MB
Events in quadrant A988,436473,075
Events in quadrant B1,044,740480,485
Events in quadrant C956,662453,028
Events in quadrant D2,002,385439,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100210
B0101730
C099800
D0130520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48841052.149877%
B48841162.375102%
C48841162.375102%
D48841182.416052%

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 5584 4884 0 0 0.00% 0.00%
B 5584 4884 1 1 0.02% 0.02%
C 5584 4884 0 0 0.00% 0.00%
D 5584 4884 5 5 0.09% 0.10%

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 12 96 16303 280.69 251 245 57.2
A 13 254 7373 124.6 251 245 57.2
A 2 79 3352 54.31 251 245 57.2
B 0 230 26911 516.91 253 247 51.6
B 4 190 15446 294.65 253 247 51.6
B 0 219 11916 226.21 253 247 51.6
C 8 128 10824 182.26 240 238 58.1
C 8 112 4985 81.73 240 238 58.1
C 0 239 4768 77.99 240 238 58.1
D 1 52 650829 11063.42 244 235 58.8
D 14 35 338267 5748.27 244 235 58.8
D 13 104 22387 376.7 244 235 58.8

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