ASTROSAT CZTI

Data Quality Report

Orbit 47488

Creation date: 2024-07-09T21:21:32.670817
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_089T01_9000006330_47488cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47488cztM0_level2_quad_clean.evt
Size (bytes)527,376,960107,539,200
Size502.9 MB 102.6 MB
Events in quadrant A7,095,476715,005
Events in quadrant B4,074,588748,087
Events in quadrant C2,920,324722,515
Events in quadrant D4,940,758629,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256881
B0164261
C0130831
D0190731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63303635.734597%
B63301892.985782%
C6330440.695103%
D63314917.755489%

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 7525 6331 97 97 1.29% 1.53%
B 7525 6331 63 63 0.84% 1.00%
C 7525 6331 5 5 0.07% 0.08%
D 7526 6332 426 426 5.66% 6.73%

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 4042670 26507.61 734 720 152.5
A 9 191 130648 852.08 734 720 152.5
A 15 235 76215 495.11 734 720 152.5
B 0 200 702126 4936.19 734 712 142.1
B 5 32 193869 1359.34 734 712 142.1
B 0 198 80320 560.24 734 712 142.1
C 0 207 56549 327.99 729 732 170.2
C 9 237 10617 58.09 729 732 170.2
C 3 233 7998 42.7 729 732 170.2
D 2 165 1543726 8413.41 717 695 183.4
D 7 38 227364 1235.92 717 695 183.4
D 11 192 64686 348.91 717 695 183.4

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