ASTROSAT CZTI

Data Quality Report

Orbit 39973

Creation date: 2024-06-27T22:10:47.400763
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_054T03_9000005516_39973cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39973cztM0_level2_quad_clean.evt
Size (bytes)394,410,24093,444,480
Size376.1 MB 89.1 MB
Events in quadrant A3,308,861638,809
Events in quadrant B3,849,709615,334
Events in quadrant C2,970,249620,105
Events in quadrant D4,012,869543,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133463
B0153832
C0124772
D0160012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5885240.407816%
B58853786.423110%
C5885120.203908%
D58854036.847918%

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 7196 5884 16 16 0.22% 0.27%
B 7196 5884 323 323 4.49% 5.49%
C 7196 5884 12 12 0.17% 0.20%
D 7196 5884 382 382 5.31% 6.49%

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 510803 3835.21 646 634 133.0
A 6 10 263411 1975.43 646 634 133.0
A 2 79 10376 73.24 646 634 133.0
B 4 171 1227956 10135.3 621 603 121.1
B 5 255 54475 444.87 621 603 121.1
B 0 230 46461 378.69 621 603 121.1
C 15 214 246417 1657.69 630 634 148.3
C 9 54 166287 1117.25 630 634 148.3
C 0 10 65982 440.74 630 634 148.3
D 2 250 960082 6328.89 612 592 151.6
D 2 249 311398 2050.11 612 592 151.6
D 1 47 111430 731.1 612 592 151.6

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