ASTROSAT CZTI

Data Quality Report

Orbit 39825

Creation date: 2024-06-27T22:09:21.197182
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/AS1A12_022T01_9000005498_39825cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39825cztM0_level2_quad_clean.evt
Size (bytes)637,896,96072,383,040
Size608.3 MB 69.0 MB
Events in quadrant A3,115,303627,446
Events in quadrant B3,539,038619,654
Events in quadrant C12,466,49959,820
Events in quadrant D4,084,682517,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125213
B0139582
C0405772
D0157842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5237571.088409%
B52372224.239068%
C5237482392.094711%
D52374358.306282%

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 7330 5238 43 43 0.59% 0.82%
B 7330 5238 163 163 2.22% 3.11%
C 7330 5238 4191 4191 57.18% 80.01%
D 7330 5238 411 411 5.61% 7.85%

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 471555 3920.3 593 581 120.1
A 13 248 244221 2028.01 593 581 120.1
A 9 143 65074 536.83 593 581 120.1
B 4 171 489611 4466.84 578 564 109.5
B 5 172 440686 4019.97 578 564 109.5
B 5 32 143445 1305.04 578 564 109.5
C 9 187 9796067 148992.06 285 285 65.7
C 15 208 1370174 20835.76 285 285 65.7
C 15 214 116747 1771.37 285 285 65.7
D 12 233 935723 6763.12 564 549 138.3
D 12 227 572503 4136.34 564 549 138.3
D 13 249 215103 1551.64 564 549 138.3

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