ASTROSAT CZTI

Data Quality Report

Orbit 10937

Creation date: 2024-06-27T16:05:47.641506
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/AS1G08_036T01_9000001584_10937cztM0_level2.evt modeM0/AS1G08_036T01_9000001584_10937cztM0_level2_quad_clean.evt
Size (bytes)262,831,68038,033,280
Size250.7 MB 36.3 MB
Events in quadrant A1,867,505220,743
Events in quadrant B2,328,676222,183
Events in quadrant C1,664,828223,077
Events in quadrant D1,834,022211,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0823819
B0944121
C077564
D082824

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3867220.568916%
B3870812.093023%
C387420.051626%
D387480.206505%

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 3876 3876 15 15 0.39% 0.39%
B 3876 3876 57 57 1.47% 1.47%
C 3876 3876 0 0 0.00% 0.00%
D 3876 3876 9 9 0.23% 0.23%

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 15 174 70222 781.27 435 426 89.3
A 15 223 62690 696.96 435 426 89.3
A 8 5 42245 468.1 435 426 89.3
B 4 239 535015 6269.7 437 425 85.3
B 0 214 40622 471.43 437 425 85.3
B 4 81 17660 202.13 437 425 85.3
C 13 61 3179 27.62 426 429 99.6
C 8 222 2331 19.1 426 429 99.6
C 14 234 1226 8.0 426 429 99.6
D 1 52 95005 920.12 423 412 102.8
D 13 152 62031 599.38 423 412 102.8
D 13 249 19376 184.47 423 412 102.8

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