ASTROSAT CZTI

Data Quality Report

Orbit 37856

Creation date: 2024-06-27T21:45:21.967869
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_37856cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37856cztM0_level2_quad_clean.evt
Size (bytes)423,792,00077,866,560
Size404.2 MB 74.3 MB
Events in quadrant A2,766,474518,718
Events in quadrant B2,866,479513,652
Events in quadrant C2,710,760495,809
Events in quadrant D4,135,905463,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113813
B0119472
C0111732
D0157972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5217130.249185%
B5217761.456776%
C5217310.594211%
D52174378.376462%

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 7250 5218 8 8 0.11% 0.15%
B 7250 5218 46 46 0.63% 0.88%
C 7250 5218 28 28 0.39% 0.54%
D 7250 5218 328 328 4.52% 6.29%

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 361590 3033.2 587 576 119.0
A 15 222 103221 862.41 587 576 119.0
A 9 143 12231 97.92 587 576 119.0
B 5 172 239965 2196.42 578 564 109.0
B 0 229 211218 1932.68 578 564 109.0
B 0 230 57576 523.07 578 564 109.0
C 15 214 231270 1744.28 569 572 132.3
C 0 10 144333 1086.96 569 572 132.3
C 14 67 42704 318.55 569 572 132.3
D 2 249 714532 5287.7 558 543 135.0
D 13 249 685157 5070.15 558 543 135.0
D 10 199 206495 1525.25 558 543 135.0

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