ASTROSAT CZTI

Data Quality Report

Orbit 42884

Creation date: 2024-06-27T22:45:23.568702
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/AS1T05_143T01_9000005830_42884cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42884cztM0_level2_quad_clean.evt
Size (bytes)357,770,88089,683,200
Size341.2 MB 85.5 MB
Events in quadrant A3,450,353588,343
Events in quadrant B2,478,740619,569
Events in quadrant C2,988,664587,220
Events in quadrant D3,887,808526,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138872
B0115452
C0125822
D0156352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56211682.988792%
B5622110.195660%
C5622350.622554%
D56223005.336179%

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 8936 5623 122 122 1.37% 2.17%
B 8937 5624 4 4 0.04% 0.07%
C 8937 5624 34 34 0.38% 0.60%
D 8937 5624 326 326 3.65% 5.80%

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 581681 4810.87 586 573 120.8
A 15 237 405758 3354.44 586 573 120.8
A 13 248 98981 814.7 586 573 120.8
B 0 190 37462 320.1 593 576 115.2
B 15 85 31928 272.07 593 576 115.2
B 5 172 18905 159.06 593 576 115.2
C 12 2 231067 1707.97 578 581 134.9
C 15 214 228214 1686.83 578 581 134.9
C 5 250 154758 1142.5 578 581 134.9
D 12 6 826006 5924.76 568 549 139.3
D 13 249 386710 2771.69 568 549 139.3
D 1 52 190904 1366.28 568 549 139.3

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