ASTROSAT CZTI

Data Quality Report

Orbit 40098

Creation date: 2024-06-27T22:12:19.082322
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_004T01_9000005520_40098cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40098cztM0_level2_quad_clean.evt
Size (bytes)371,701,44091,137,600
Size354.5 MB 86.9 MB
Events in quadrant A2,699,968627,517
Events in quadrant B2,461,192658,360
Events in quadrant C5,119,138566,860
Events in quadrant D3,083,079550,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111563
B0105682
C0186272
D0127862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508580.157325%
B508560.117994%
C508560511.897738%
D50852033.992134%

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 9151 5087 4 4 0.04% 0.08%
B 9151 5087 1 1 0.01% 0.02%
C 9151 5087 557 557 6.09% 10.95%
D 9151 5087 182 182 1.99% 3.58%

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 433531 3657.82 583 573 118.4
A 13 248 6420 49.4 583 573 118.4
A 13 254 6200 47.54 583 573 118.4
B 0 189 107460 957.82 590 575 111.6
B 4 171 24614 215.42 590 575 111.6
B 12 111 13736 117.94 590 575 111.6
C 9 187 2666870 20784.81 552 557 128.3
C 15 214 203470 1581.78 552 557 128.3
C 0 10 46179 355.64 552 557 128.3
D 12 227 434313 3218.05 554 541 134.8
D 12 218 176709 1306.95 554 541 134.8
D 13 249 108900 803.89 554 541 134.8

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