ASTROSAT CZTI

Data Quality Report

Orbit 20170518_G07_028T01_9000001232_level2

Creation date: 2017-09-23T23:12:41.189579
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/AS1G07_028T01_9000001232cztM0_level2.evt modeM0/AS1G07_028T01_9000001232cztM0_level2_quad_clean.evt
Size (bytes)1,178,095,680200,373,120
Size1.1 GB 191.1 MB
Events in quadrant A9,287,7131,248,645
Events in quadrant B8,822,2531,242,617
Events in quadrant C7,541,2601,241,039
Events in quadrant D8,917,3331,204,654

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03400
C03320
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C090
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385360
B0370780
C0338990
D0374380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163893001.830496%
B163883492.129607%
C164091200.731306%
D164252891.759513%

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 18429 17012 54 54 0.29% 0.32%
B 18427 17007 101 101 0.55% 0.59%
C 18428 16977 4 4 0.02% 0.02%
D 18429 16994 121 121 0.66% 0.71%

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 8 5 1485767 3719.5 1956 1914 398.9
A 15 174 109353 269.31 1956 1914 398.9
A 4 2 52817 127.6 1956 1914 398.9
B 4 48 581493 1530.28 1962 1914 378.7
B 10 16 349371 917.4 1962 1914 378.7
B 0 214 116841 303.44 1962 1914 378.7
C 10 22 32755 69.56 1908 1917 443.3
C 1 3 19963 40.7 1908 1917 443.3
C 8 128 18733 37.93 1908 1917 443.3
D 13 105 723609 1447.2 1894 1846 498.7
D 8 195 648749 1297.1 1894 1846 498.7
D 2 14 128366 253.68 1894 1846 498.7

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