ASTROSAT CZTI

Data Quality Report

Orbit 37913

Creation date: 2024-06-27T21:46:04.788421
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/AS1T05_059T01_9000005354_37913cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37913cztM0_level2_quad_clean.evt
Size (bytes)425,145,60095,460,480
Size405.5 MB 91.0 MB
Events in quadrant A2,873,671644,605
Events in quadrant B3,436,720630,995
Events in quadrant C2,859,520642,118
Events in quadrant D3,350,507607,051

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116343
B0134602
C0116252
D0133022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5222170.325546%
B52222264.327844%
C5222571.091536%
D52221763.370356%

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 7344 5223 10 10 0.14% 0.19%
B 7344 5223 147 147 2.00% 2.81%
C 7344 5223 42 42 0.57% 0.80%
D 7344 5223 142 142 1.93% 2.72%

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 362911 2863.18 629 619 126.5
A 13 248 32236 249.87 629 619 126.5
A 12 189 24391 187.87 629 619 126.5
B 5 172 732736 6362.85 608 595 115.1
B 0 230 75610 651.94 608 595 115.1
B 0 189 51906 445.93 608 595 115.1
C 15 214 222686 1611.37 599 607 137.8
C 0 10 189518 1370.71 599 607 137.8
C 14 254 90426 651.71 599 607 137.8
D 1 52 334009 2261.31 605 591 147.4
D 2 250 182122 1231.18 605 591 147.4
D 2 249 120971 816.44 605 591 147.4

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