ASTROSAT CZTI

Data Quality Report

Orbit 20180303_A04_053T05_9000001936_level2

Creation date: 2018-07-06T17:27:33.187320
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/AS1A04_053T05_9000001936cztM0_level2_bc.evt modeM0/AS1A04_053T05_9000001936cztM0_level2_quad_clean.evt
Size (bytes)360,031,680140,685,120
Size343.4 MB 134.2 MB
Events in quadrant A2,058,611916,539
Events in quadrant B4,167,312854,115
Events in quadrant C1,793,518932,531
Events in quadrant D2,221,624891,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202350
B0315470
C0196710
D0206710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95953273.408025%
B9595180018.759771%
C95951791.865555%
D95952272.365816%

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 9981 9597 2 2 0.02% 0.02%
B 9981 9590 132 132 1.32% 1.38%
C 9981 9596 1 1 0.01% 0.01%
D 9981 9596 7 7 0.07% 0.07%

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 162232 1539.59 457 446 105.1
A 15 223 65003 614.34 457 446 105.1
A 1 162 22869 213.38 457 446 105.1
B 4 239 1780778 21496.95 417 405 82.8
B 0 85 381143 4597.19 417 405 82.8
B 3 64 199924 2409.07 417 405 82.8
C 8 128 10297 96.16 450 442 102.5
C 12 4 9105 84.53 450 442 102.5
C 8 112 5788 52.17 450 442 102.5
D 1 52 244948 2272.32 451 433 107.6
D 10 157 50382 464.18 451 433 107.6
D 5 222 44505 409.57 451 433 107.6

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