ASTROSAT CZTI

Data Quality Report

Orbit 34818

Creation date: 2022-03-07T16:59:11.052903
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C07_005T01_9000004992_34818cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34818cztM0_level2_quad_clean.evt
Size (bytes)582,615,360104,676,480
Size555.6 MB 99.8 MB
Events in quadrant A2,780,897708,101
Events in quadrant B6,942,342661,591
Events in quadrant C3,292,363708,766
Events in quadrant D4,220,384669,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123063
B0247602
C0132972
D0166272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A604170.115875%
B6041103117.066711%
C6041771.274623%
D60411302.151962%

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 7354 6042 1 1 0.01% 0.02%
B 7354 6042 788 788 10.72% 13.04%
C 7354 6042 58 58 0.79% 0.96%
D 7354 6042 119 119 1.62% 1.97%

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 10 83 53483 383.33 690 678 137.8
A 7 16 28835 204.4 690 678 137.8
A 13 254 11119 75.79 690 678 137.8
B 4 251 3879247 31382.38 653 635 123.6
B 5 172 276305 2230.48 653 635 123.6
B 10 245 89493 718.96 653 635 123.6
C 15 214 276668 1778.08 668 671 155.2
C 0 207 183314 1176.66 668 671 155.2
C 0 10 117790 754.53 668 671 155.2
D 8 195 719014 4385.99 668 650 163.8
D 14 52 149973 911.7 668 650 163.8
D 2 250 148677 903.78 668 650 163.8

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