ASTROSAT CZTI

Data Quality Report

Orbit 20170715_A02_029T01_9000001386_level2

Creation date: 2017-09-24T11:14:13.798935
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/AS1A02_029T01_9000001386cztM0_level2.evt modeM0/AS1A02_029T01_9000001386cztM0_level2_quad_clean.evt
Size (bytes)3,083,688,000524,741,760
Size2.9 GB 500.4 MB
Events in quadrant A23,892,0603,234,302
Events in quadrant B22,394,2563,301,595
Events in quadrant C20,253,3383,281,768
Events in quadrant D23,943,2033,118,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0996640
B0934980
C0886920
D01000120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08800
B08760
C08780
D08760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A430477541.751574%
B430749532.212472%
C431115461.266498%
D4309112672.940289%

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 51484 43321 26 26 0.05% 0.06%
B 51484 43317 168 168 0.33% 0.39%
C 51484 43325 10 10 0.02% 0.02%
D 51484 43331 697 697 1.35% 1.61%

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 1 162 1560838 1454.67 5280 5170 1069.4
A 1 178 704987 654.38 5280 5170 1069.4
A 1 161 651331 604.21 5280 5170 1069.4
B 10 245 505859 497.5 5323 5206 1006.3
B 4 173 489800 481.54 5323 5206 1006.3
B 0 219 268974 262.11 5323 5206 1006.3
C 14 234 84262 66.65 5171 5190 1186.4
C 13 61 38726 28.27 5171 5190 1186.4
C 8 222 15005 8.27 5171 5190 1186.4
D 1 52 2841790 2328.12 5089 4978 1218.5
D 2 152 594935 484.17 5089 4978 1218.5
D 12 233 576689 469.19 5089 4978 1218.5

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