ASTROSAT CZTI

Data Quality Report

Orbit 20190313_A05_226T06_9000002792_level2

Creation date: 2019-03-14T10:54:21.390286
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/AS1A05_226T06_9000002792cztM0_level2_bc.evt modeM0/AS1A05_226T06_9000002792cztM0_level2_quad_clean.evt
Size (bytes)765,028,800261,852,480
Size729.6 MB 249.7 MB
Events in quadrant A4,412,0491,706,701
Events in quadrant B4,446,0161,716,272
Events in quadrant C4,520,8301,626,974
Events in quadrant D8,473,6631,555,441

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411460
B0411910
C0423660
D0546060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192452331.210704%
B192452501.299039%
C192453821.984931%
D192459324.842816%

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 23595 19244 3 3 0.01% 0.02%
B 23595 19244 1 1 0.00% 0.01%
C 23595 19243 3 3 0.01% 0.02%
D 23595 19242 236 236 1.00% 1.23%

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 6 16 97891 409.05 1108 1090 236.6
A 13 254 29327 119.32 1108 1090 236.6
A 9 143 18210 72.34 1108 1090 236.6
B 0 229 36400 171.97 1108 1085 205.4
B 4 216 34497 162.71 1108 1085 205.4
B 3 64 32664 153.78 1108 1085 205.4
C 9 54 443602 1826.08 1045 1040 242.4
C 3 233 54288 219.71 1045 1040 242.4
C 13 61 6048 20.66 1045 1040 242.4
D 7 238 2790035 11532.6 1061 1025 241.8
D 1 52 1301972 5379.44 1061 1025 241.8
D 7 96 253223 1042.84 1061 1025 241.8

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