ASTROSAT CZTI

Data Quality Report

Orbit 20160203_T01_052T01_9000000312_level2

Creation date: 2018-05-17T01:11:37.526874
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/AS1T01_052T01_9000000312cztM0_level2.evt modeM0/AS1T01_052T01_9000000312cztM0_level2_quad_clean.evt
Size (bytes)16,924,697,2801,255,544,640
Size15.8 GB 1.2 GB
Events in quadrant A133,818,5177,778,257
Events in quadrant B131,352,3957,967,202
Events in quadrant C122,228,5547,805,315
Events in quadrant D118,386,7357,410,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B1140
C1140
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04706030
B04634380
C04364640
D04252620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020680
B020680
C020680
D020680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10313810561.023871%
B1031408350.809579%
C1031404600.445996%
D10313610621.029708%

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 115170 103160 6371 6371 5.53% 6.18%
B 115170 103162 5580 5580 4.85% 5.41%
C 115170 103162 4172 4172 3.62% 4.04%
D 115170 103161 4581 4581 3.98% 4.44%

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 6468750 808.41 32981 33220 7960.7
A 12 236 896927 108.5 32981 33220 7960.7
A 14 5 182672 18.77 32981 33220 7960.7
B 5 68 330546 36.77 34370 34565 8049.1
B 0 198 266238 28.78 34370 34565 8049.1
B 15 85 150512 14.41 34370 34565 8049.1
C 14 223 288255 29.47 31172 32296 8684.4
C 9 54 166798 15.49 31172 32296 8684.4
C 7 159 106830 8.58 31172 32296 8684.4
D 2 152 1810426 190.17 30229 31405 9354.7
D 13 53 810727 83.31 30229 31405 9354.7
D 13 105 464434 46.29 30229 31405 9354.7

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