ASTROSAT CZTI

Data Quality Report

Orbit 20151019_P01_161T01_9000000040_level2

Creation date: 2016-09-06T18:00:25.748454
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/AS1P01_161T01_9000000040cztM0_level2_bc.evt modeM0/AS1P01_161T01_9000000040cztM0_level2_quad_clean.evt
Size (bytes)267,402,24091,094,400
Size255.0 MB 86.9 MB
Events in quadrant A1,824,745566,347
Events in quadrant B1,702,466570,337
Events in quadrant C1,957,666562,362
Events in quadrant D2,100,945543,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327880
B0322190
C0314340
D0308370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7416240.323625%
B7416260.350593%
C7416110.148328%
D7416761.024811%

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 11907 7416 0 0 0.00% 0.00%
B 11907 7416 0 0 0.00% 0.00%
C 11907 7416 2 2 0.02% 0.03%
D 11907 7415 2 2 0.02% 0.03%

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 12 236 266964 3505.44 351 345 76.1
A 0 69 69371 907.54 351 345 76.1
A 15 250 39012 508.38 351 345 76.1
B 0 207 65950 990.82 360 351 66.2
B 0 168 60917 914.8 360 351 66.2
B 7 220 41332 618.98 360 351 66.2
C 1 1 443853 5991.66 347 343 74.0
C 2 192 49974 670.5 347 343 74.0
C 9 68 35725 478.0 347 343 74.0
D 1 5 173181 2198.94 343 335 78.6
D 4 114 106046 1344.85 343 335 78.6
D 10 154 83707 1060.65 343 335 78.6

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