ASTROSAT CZTI

Data Quality Report

Orbit 37852

Creation date: 2024-06-27T21:45:18.260706
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/AS1C07_001T12_9000005352_37852cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37852cztM0_level2_quad_clean.evt
Size (bytes)412,620,480101,710,080
Size393.5 MB 97.0 MB
Events in quadrant A3,041,967696,741
Events in quadrant B2,647,448709,492
Events in quadrant C2,672,846674,405
Events in quadrant D3,783,480638,366

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121063
B0110912
C0110712
D0146642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5155961.862270%
B5155571.105723%
C5155440.853540%
D51552284.422890%

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 7097 5156 78 78 1.10% 1.51%
B 7097 5156 44 44 0.62% 0.85%
C 7097 5156 42 42 0.59% 0.81%
D 7097 5156 210 210 2.96% 4.07%

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 9 143 341298 2794.5 606 596 121.9
A 10 83 337326 2761.92 606 596 121.9
A 13 6 13058 102.22 606 596 121.9
B 5 172 222877 1973.53 597 585 112.6
B 0 213 28060 243.93 597 585 112.6
B 0 230 25935 225.06 597 585 112.6
C 15 214 217041 1632.78 574 577 132.6
C 0 10 184642 1388.4 574 577 132.6
C 1 23 21160 155.26 574 577 132.6
D 2 249 660450 4664.16 576 559 141.5
D 1 52 263124 1855.83 576 559 141.5
D 1 47 136527 961.03 576 559 141.5

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