ASTROSAT CZTI

Data Quality Report

Orbit 20181114_T03_013T01_9000002514_level2

Creation date: 2018-11-16T12:30:09.579919
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/AS1T03_013T01_9000002514cztM0_level2_bc.evt modeM0/AS1T03_013T01_9000002514cztM0_level2_quad_clean.evt
Size (bytes)2,246,976,000634,008,960
Size2.1 GB 604.6 MB
Events in quadrant A15,802,1974,128,905
Events in quadrant B9,903,6834,284,280
Events in quadrant C14,823,0024,068,618
Events in quadrant D24,407,6103,583,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09300
B09300
C09300
D09300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01207800
B0953030
C01138720
D01677330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4569820514.488161%
B456993800.831528%
C4569910272.247314%
D45699827418.105429%

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 64791 45695 122 122 0.19% 0.27%
B 64791 45702 4 4 0.01% 0.01%
C 64791 45701 6 6 0.01% 0.01%
D 64791 45671 369 369 0.57% 0.81%

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 15 174 6841941 13521.55 2319 2281 505.8
A 0 23 53735 101.72 2319 2281 505.8
A 0 226 18006 31.09 2319 2281 505.8
B 15 35 197469 438.67 2367 2310 444.9
B 0 229 121311 267.49 2367 2310 444.9
B 0 197 105432 231.79 2367 2310 444.9
C 3 233 6065358 11494.93 2243 2231 527.5
C 5 112 67211 123.19 2243 2231 527.5
C 14 225 57290 104.38 2243 2231 527.5
D 1 52 15862814 33147.88 2065 1996 478.5
D 2 152 272341 565.0 2065 1996 478.5
D 2 234 173916 359.3 2065 1996 478.5

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