ASTROSAT CZTI

Data Quality Report

Orbit 20201118_A10_016T02_9000004018_level2

Creation date: 2025-12-17T19:47:20.249020
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/AS1A10_016T02_9000004018cztM0_level2.fits modeM0/AS1A10_016T02_9000004018cztM0_level2_quad_clean.evt
Size (bytes)383,990,400271,405,440
Size366.2 MB 258.8 MB
Events in quadrant A2,441,7461,556,802
Events in quadrant B2,292,9041,437,342
Events in quadrant C2,306,1801,368,038
Events in quadrant D2,057,7381,324,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0779240
B0898730
C0788780
D0819850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07520
B07520
C07520
D07520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A368414471.213322%
B3684118745.086724%
C368416941.883771%
D368415631.528189%

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 42946 36835 0 0 0.00% 0.00%
B 42946 36817 0 0 0.00% 0.00%
C 42946 36835 0 0 0.00% 0.00%
D 42946 36834 0 0 0.00% 0.00%

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 0 29 2243 10.54 635 600 155.9
A 7 110 1913 8.42 635 600 155.9
A 9 19 1801 7.71 635 600 155.9
B 2 9 1785 9.86 605 579 122.3
B 5 128 1537 7.83 605 579 122.3
B 2 8 1499 7.52 605 579 122.3
C 12 241 1638 6.83 609 573 155.8
C 9 209 1574 6.42 609 573 155.8
C 12 249 1564 6.36 609 573 155.8
D 7 3 1484 6.06 586 534 156.9
D 6 231 1478 6.02 586 534 156.9
D 15 46 1426 5.69 586 534 156.9

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