ASTROSAT CZTI

Data Quality Report

Orbit 39518

Creation date: 2024-06-27T22:05:35.752570
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_9000005488_39518cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39518cztM0_level2_quad_clean.evt
Size (bytes)350,040,96089,979,840
Size333.8 MB 85.8 MB
Events in quadrant A3,098,678605,851
Events in quadrant B2,244,629641,219
Events in quadrant C4,800,434561,217
Events in quadrant D2,425,227566,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123743
B0100242
C0177132
D0107592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49831593.190849%
B498350.100341%
C498355611.157937%
D4983220.441501%

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 6986 4984 137 137 1.96% 2.75%
B 6986 4984 0 0 0.00% 0.00%
C 6986 4984 498 498 7.13% 9.99%
D 6986 4984 17 17 0.24% 0.34%

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 6 10 479959 4186.64 565 555 114.5
A 10 83 413849 3609.3 565 555 114.5
A 13 248 11686 97.21 565 555 114.5
B 12 111 12931 114.81 570 556 107.8
B 11 111 11877 105.03 570 556 107.8
B 14 111 11382 100.44 570 556 107.8
C 9 187 2422314 19285.08 544 546 125.6
C 15 214 203340 1614.89 544 546 125.6
C 15 208 34954 274.0 544 546 125.6
D 13 249 123536 899.97 561 545 136.7
D 2 249 57076 413.66 561 545 136.7
D 12 227 42060 303.78 561 545 136.7

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