ASTROSAT CZTI

Data Quality Report

Orbit 20170207_G06_117T01_9000001012_level2

Creation date: 2017-09-23T02:16:42.291801
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/AS1G06_117T01_9000001012cztM0_level2.evt modeM0/AS1G06_117T01_9000001012cztM0_level2_quad_clean.evt
Size (bytes)3,083,302,080547,156,800
Size2.9 GB 521.8 MB
Events in quadrant A24,166,0793,344,915
Events in quadrant B21,098,6453,510,051
Events in quadrant C19,825,5823,506,330
Events in quadrant D25,417,1783,290,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01008660
B0916360
C0885820
D01057300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08620
B08640
C08640
D08640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4254615773.706576%
B425435071.191735%
C425514250.998801%
D4254616203.807643%

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 83013 42572 826 826 1.00% 1.94%
B 83013 42570 19 19 0.02% 0.04%
C 83013 42573 67 67 0.08% 0.16%
D 83013 42568 780 780 0.94% 1.83%

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 15 239 3583116 3539.12 5031 4923 1011.0
A 14 111 557466 546.51 5031 4923 1011.0
A 15 234 322640 314.25 5031 4923 1011.0
B 0 187 488480 497.8 5154 5042 971.1
B 0 214 398380 405.03 5154 5042 971.1
B 4 81 130025 128.7 5154 5042 971.1
C 9 68 213106 180.94 5002 5030 1149.9
C 1 16 79643 64.88 5002 5030 1149.9
C 13 61 39044 29.58 5002 5030 1149.9
D 13 137 2831992 2367.67 4915 4771 1194.1
D 2 216 1954659 1632.94 4915 4771 1194.1
D 14 34 646116 537.1 4915 4771 1194.1

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