ASTROSAT CZTI

Data Quality Report

Orbit 20180306_T02_012T05_9000001954_level2

Creation date: 2018-07-03T17:24:57.381774
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/AS1T02_012T05_9000001954cztM0_level2_bc.evt modeM0/AS1T02_012T05_9000001954cztM0_level2_quad_clean.evt
Size (bytes)207,993,60047,217,600
Size198.4 MB 45.0 MB
Events in quadrant A908,381301,111
Events in quadrant B2,726,012238,303
Events in quadrant C855,859303,510
Events in quadrant D1,505,380281,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089200
B0207060
C088270
D0114850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4325100.231214%
B4325199046.011561%
C4325100.231214%
D43251764.069364%

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 5506 4326 0 0 0.00% 0.00%
B 5506 4239 260 260 4.72% 6.13%
C 5506 4326 0 0 0.00% 0.00%
D 5506 4326 2 2 0.04% 0.05%

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 12 189 49554 976.12 218 213 50.5
A 4 2 7265 139.51 218 213 50.5
A 1 162 5025 95.2 218 213 50.5
B 4 239 2075194 66314.9 151 146 31.3
B 0 189 20914 663.71 151 146 31.3
B 0 214 15580 493.24 151 146 31.3
C 15 208 3165 58.33 217 214 50.6
C 13 61 1324 21.94 217 214 50.6
C 8 222 817 11.92 217 214 50.6
D 13 122 558063 10555.42 214 205 52.9
D 12 222 36667 689.91 214 205 52.9
D 1 52 36178 680.66 214 205 52.9

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