ASTROSAT CZTI

Data Quality Report

Orbit 20181026_A05_002T07_9000002458_level2

Creation date: 2018-10-27T15:02:35.366124
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_002T07_9000002458cztM0_level2.evt modeM0/AS1A05_002T07_9000002458cztM0_level2_quad_clean.evt
Size (bytes)909,455,040212,575,680
Size867.3 MB 202.7 MB
Events in quadrant A6,552,4111,409,350
Events in quadrant B6,958,1981,444,918
Events in quadrant C6,427,6241,362,405
Events in quadrant D6,723,5211,322,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280970
B0292060
C0276070
D0291070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130141521.167973%
B130142571.974796%
C130141741.337022%
D130141521.167973%

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 16400 13018 30 30 0.18% 0.23%
B 16400 13018 19 19 0.12% 0.15%
C 16400 13018 0 0 0.00% 0.00%
D 16400 13018 65 65 0.40% 0.50%

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 9 143 170635 539.3 1578 1544 313.5
A 3 1 167944 530.71 1578 1544 313.5
A 12 96 131278 413.77 1578 1544 313.5
B 15 35 379828 1280.54 1592 1554 295.4
B 0 229 131712 440.61 1592 1554 295.4
B 0 189 61144 201.72 1592 1554 295.4
C 3 233 238583 675.08 1526 1537 351.1
C 14 238 237494 671.98 1526 1537 351.1
C 13 61 11032 27.04 1526 1537 351.1
D 1 52 408039 1105.28 1531 1488 367.8
D 15 0 233089 629.65 1531 1488 367.8
D 5 222 181671 489.86 1531 1488 367.8

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