ASTROSAT CZTI

Data Quality Report

Orbit 43411

Creation date: 2024-06-27T22:51:40.116094
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/AS1A12_018T01_9000005874_43411cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43411cztM0_level2_quad_clean.evt
Size (bytes)358,539,84086,040,000
Size341.9 MB 82.1 MB
Events in quadrant A3,535,610564,937
Events in quadrant B2,708,792594,495
Events in quadrant C2,639,345558,727
Events in quadrant D3,971,519511,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138661
B0117102
C0113461
D0155181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53552394.463119%
B5354280.522973%
C535580.149393%
D53551392.595705%

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 6968 5356 197 197 2.83% 3.68%
B 6967 5355 18 18 0.26% 0.34%
C 6968 5356 3 3 0.04% 0.06%
D 6968 5356 157 157 2.25% 2.93%

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 15 237 790224 6862.88 556 543 115.1
A 10 83 546777 4747.15 556 543 115.1
A 13 248 15440 129.47 556 543 115.1
B 0 189 223669 2051.5 569 554 108.8
B 0 190 85790 783.73 569 554 108.8
B 15 85 75978 693.51 569 554 108.8
C 15 214 218934 1659.69 560 562 131.6
C 3 233 189108 1433.01 560 562 131.6
C 0 207 24590 182.62 560 562 131.6
D 2 16 732825 5423.84 554 537 135.0
D 1 52 611042 4521.83 554 537 135.0
D 12 233 144737 1068.05 554 537 135.0

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