ASTROSAT CZTI

Data Quality Report

Orbit 12864

Creation date: 2024-06-27T16:33:16.460875
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/AS1A04_048T01_9000001890_12864cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12864cztM0_level2_quad_clean.evt
Size (bytes)630,587,52091,370,880
Size601.4 MB 87.1 MB
Events in quadrant A3,114,953596,603
Events in quadrant B5,662,485564,022
Events in quadrant C3,076,442603,876
Events in quadrant D6,803,718549,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133593
B0211042
C0133322
D0244422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6490560.862866%
B649093314.375963%
C6490540.832049%
D6490132220.369800%

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 7556 6492 2 2 0.03% 0.03%
B 7556 6491 585 585 7.74% 9.01%
C 7556 6492 0 0 0.00% 0.00%
D 7556 6492 1312 1312 17.36% 20.21%

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 12 189 42996 262.5 796 780 160.8
A 0 226 7354 40.88 796 780 160.8
A 12 194 6198 33.69 796 780 160.8
B 4 239 2120024 15269.03 736 719 138.8
B 0 85 326677 2348.44 736 719 138.8
B 3 64 99362 710.7 736 719 138.8
C 13 61 5679 26.79 788 792 182.4
C 4 112 4234 18.87 788 792 182.4
C 4 175 2327 8.41 788 792 182.4
D 1 52 4023777 23483.25 720 701 171.3
D 2 234 19872 111.9 720 701 171.3
D 2 136 17346 97.16 720 701 171.3

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