ASTROSAT CZTI

Data Quality Report

Orbit 41706

Creation date: 2024-06-27T22:31:51.003863
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_077T12_9000005692_41706cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41706cztM0_level2_quad_clean.evt
Size (bytes)341,110,08097,197,120
Size325.3 MB 92.7 MB
Events in quadrant A3,039,989675,993
Events in quadrant B2,528,915687,415
Events in quadrant C2,807,171636,170
Events in quadrant D3,842,677576,699

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122242
B0107352
C0113312
D0148162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5240140.267176%
B524060.114504%
C5240651.240458%
D52402625.000000%

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 7303 5241 3 3 0.04% 0.06%
B 7303 5241 1 1 0.01% 0.02%
C 7303 5241 54 54 0.74% 1.03%
D 7303 5241 275 275 3.77% 5.25%

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 525225 4022.98 642 631 130.4
A 2 79 32470 244.17 642 631 130.4
A 13 254 6927 48.28 642 631 130.4
B 5 255 38555 318.39 626 610 119.2
B 15 35 15528 125.17 626 610 119.2
B 12 111 14837 119.38 626 610 119.2
C 15 214 215379 1500.65 614 619 143.1
C 0 10 177230 1234.08 614 619 143.1
C 15 111 15701 105.39 614 619 143.1
D 2 249 1079079 7274.05 611 594 148.3
D 13 249 353719 2381.72 611 594 148.3
D 2 234 23274 152.97 611 594 148.3

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