ASTROSAT CZTI

Data Quality Report

Orbit 44181

Creation date: 2024-06-27T23:00:14.258843
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/AS1A13_074T05_9000005958_44181cztM0_level2.fits modeM0/AS1A13_074T05_9000005958_44181cztM0_level2_quad_clean.evt
Size (bytes)577,215,360107,651,520
Size550.5 MB 102.7 MB
Events in quadrant A7,834,554679,169
Events in quadrant B4,531,620749,367
Events in quadrant C3,270,405732,549
Events in quadrant D5,209,763630,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281252
B0181252
C0141862
D0200312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A671681112.075640%
B67153074.571854%
C6715851.265823%
D67155768.577811%

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 7711 6717 456 456 5.91% 6.79%
B 7710 6716 140 140 1.82% 2.08%
C 7710 6716 6 6 0.08% 0.09%
D 7710 6716 393 393 5.10% 5.85%

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 15 223 3473105 22426.53 745 729 154.8
A 10 83 1412498 9117.98 745 729 154.8
A 7 3 57663 367.71 745 729 154.8
B 5 235 633899 4275.83 758 737 148.1
B 0 200 321113 2163.54 758 737 148.1
B 0 219 308785 2080.29 758 737 148.1
C 9 54 206892 1167.58 749 753 176.6
C 14 254 70515 395.13 749 753 176.6
C 14 96 27057 148.98 749 753 176.6
D 13 249 949267 5196.63 727 705 182.5
D 1 52 559408 3060.81 727 705 182.5
D 1 47 449799 2460.33 727 705 182.5

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