ASTROSAT CZTI

Data Quality Report

Orbit 20160818_G05_142T01_9000000610_level2

Creation date: 2017-10-18T01:11:55.517881
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/AS1G05_142T01_9000000610cztM0_level2.evt modeM0/AS1G05_142T01_9000000610cztM0_level2_quad_clean.evt
Size (bytes)3,443,526,720545,388,480
Size3.2 GB 520.1 MB
Events in quadrant A22,497,7383,380,030
Events in quadrant B24,173,5153,435,315
Events in quadrant C21,397,5063,455,831
Events in quadrant D33,239,1883,214,834

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09000
B09080
C09000
D08980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970520
B01010920
C0948010
D01297450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4422012852.905925%
B4425012292.777401%
C442186901.560450%
D4404542389.621978%

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 49946 44422 463 463 0.93% 1.04%
B 49945 44447 465 465 0.93% 1.05%
C 49946 44436 206 206 0.41% 0.46%
D 49945 44199 3555 3555 7.12% 8.04%

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 13 251 1788712 1693.93 5151 5033 1053.0
A 8 15 377084 353.33 5151 5033 1053.0
A 0 50 249214 231.9 5151 5033 1053.0
B 10 16 2870441 2852.69 5223 5107 1004.4
B 4 80 576315 568.69 5223 5107 1004.4
B 15 54 163912 158.1 5223 5107 1004.4
C 9 247 1486011 1274.06 5023 5052 1162.4
C 12 4 87840 71.22 5023 5052 1162.4
C 9 54 74030 59.34 5023 5052 1162.4
D 12 79 7763706 6716.89 4781 4643 1155.2
D 13 235 4521522 3910.19 4781 4643 1155.2
D 2 136 1184857 1021.69 4781 4643 1155.2

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