ASTROSAT CZTI

Data Quality Report

Orbit 20190812_A05_088T05_9000003088_level2

Creation date: 2019-08-20T10:49:44.768581
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_088T05_9000003088cztM0_level2_bc.evt modeM0/AS1A05_088T05_9000003088cztM0_level2_quad_clean.evt
Size (bytes)3,574,912,3201,218,358,080
Size3.3 GB 1.1 GB
Events in quadrant A20,246,6877,842,307
Events in quadrant B23,582,8897,871,452
Events in quadrant C19,658,4787,508,325
Events in quadrant D38,290,5317,151,167

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670
B01670
C01670
D01670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01981840
B02125360
C01986510
D02616460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019420
B018340
C019420
D019420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A953589030.946958%
B9536216341.713471%
C9535412141.273151%
D9534550645.311238%

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 111916 95396 10 10 0.01% 0.01%
B 111916 95389 12 12 0.01% 0.01%
C 111916 95389 3 3 0.00% 0.00%
D 111916 95392 784 784 0.70% 0.82%

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 5 16 197650 173.48 5195 5113 1109.9
A 12 96 66030 54.89 5195 5113 1109.9
A 15 174 41430 32.72 5195 5113 1109.9
B 7 220 1355907 1385.95 5223 5104 974.6
B 3 64 538448 547.22 5223 5104 974.6
B 0 229 426580 432.44 5223 5104 974.6
C 9 54 220795 186.42 4960 4953 1157.8
C 7 247 188822 158.81 4960 4953 1157.8
C 3 233 84614 68.8 4960 4953 1157.8
D 1 52 6096531 5330.75 4978 4807 1142.8
D 9 1 2969633 2594.46 4978 4807 1142.8
D 5 222 2449009 2138.87 4978 4807 1142.8

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