ASTROSAT CZTI

Data Quality Report

Orbit 20161025_G06_168T07_9000000750_level2

Creation date: 2017-09-18T20:01:58.439511
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_168T07_9000000750cztM0_level2.evt modeM0/AS1G06_168T07_9000000750cztM0_level2_quad_clean.evt
Size (bytes)1,927,491,840319,959,360
Size1.8 GB 305.1 MB
Events in quadrant A15,463,9001,946,014
Events in quadrant B12,750,7202,016,600
Events in quadrant C12,397,4892,001,358
Events in quadrant D15,933,6941,864,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05500
B05520
C05520
D05520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0643130
B0554380
C0552140
D0657730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270811870.690521%
B270851340.494739%
C270891260.465133%
D270887112.624778%

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 33339 27142 44 44 0.13% 0.16%
B 33339 27149 2 2 0.01% 0.01%
C 33339 27137 0 0 0.00% 0.00%
D 33339 27142 576 576 1.73% 2.12%

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 15 236 2636788 4137.82 3180 3111 636.5
A 15 79 382148 595.51 3180 3111 636.5
A 15 223 170576 263.11 3180 3111 636.5
B 15 204 134085 218.76 3230 3150 598.5
B 12 111 55720 87.83 3230 3150 598.5
B 11 111 44165 68.53 3230 3150 598.5
C 9 16 65948 87.69 3151 3165 715.9
C 13 61 25149 30.71 3151 3165 715.9
C 14 67 12477 13.01 3151 3165 715.9
D 8 230 3325980 4396.92 3108 3020 755.7
D 11 241 481139 632.64 3108 3020 755.7
D 8 195 108797 139.96 3108 3020 755.7

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