ASTROSAT CZTI

Data Quality Report

Orbit 37729

Creation date: 2024-06-27T21:43:42.886440
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_106T02_9000005344_37729cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37729cztM0_level2_quad_clean.evt
Size (bytes)753,171,84085,029,120
Size718.3 MB 81.1 MB
Events in quadrant A8,883,042506,176
Events in quadrant B3,155,767572,908
Events in quadrant C2,916,727584,425
Events in quadrant D7,450,707492,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303983
B0135612
C0125392
D0263792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5977243140.672578%
B5977971.622888%
C5977220.368078%
D5977123320.629078%

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 7289 5976 2304 2304 31.61% 38.55%
B 7289 5976 66 66 0.91% 1.10%
C 7289 5976 16 16 0.22% 0.27%
D 7289 5976 1321 1321 18.12% 22.11%

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 15 222 6187590 51164.15 596 585 120.9
A 10 83 310324 2561.42 596 585 120.9
A 9 143 57968 474.54 596 585 120.9
B 5 172 181456 1447.97 649 631 124.9
B 5 255 139575 1112.61 649 631 124.9
B 5 200 78548 623.93 649 631 124.9
C 15 214 251587 1670.24 643 646 150.2
C 0 10 71730 473.13 643 646 150.2
C 0 207 32076 209.19 643 646 150.2
D 12 227 3750479 25953.91 587 569 144.5
D 2 249 523381 3618.49 587 569 144.5
D 1 47 289991 2003.15 587 569 144.5

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