ASTROSAT CZTI

Data Quality Report

Orbit 36930

Creation date: 2024-06-27T21:33:19.773023
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/AS1A11_087T05_9000005248_36930cztM0_level2.evt modeM0/AS1A11_087T05_9000005248_36930cztM0_level2_quad_clean.evt
Size (bytes)370,085,76067,616,640
Size352.9 MB 64.5 MB
Events in quadrant A2,540,823419,810
Events in quadrant B2,710,014429,641
Events in quadrant C2,898,421422,033
Events in quadrant D2,700,523407,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110013
B0116352
C0118222
D0118772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5260160.304183%
B5260340.646388%
C5260941.787072%
D5260701.330798%

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 7083 5261 4 4 0.06% 0.08%
B 7083 5261 15 15 0.21% 0.29%
C 7083 5261 77 77 1.09% 1.46%
D 7083 5261 56 56 0.79% 1.06%

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 224454 1879.8 586 573 119.1
A 15 174 27478 225.91 586 573 119.1
A 9 143 14128 113.81 586 573 119.1
B 0 182 143506 1264.56 585 569 113.0
B 5 172 60761 532.52 585 569 113.0
B 5 255 47087 411.55 585 569 113.0
C 0 10 313272 2306.13 577 582 135.6
C 15 214 228342 1679.76 577 582 135.6
C 0 207 85974 629.78 577 582 135.6
D 12 233 137184 948.96 578 562 144.0
D 2 250 92897 641.35 578 562 144.0
D 10 118 64666 445.26 578 562 144.0

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