ASTROSAT CZTI

Data Quality Report

Orbit 41673

Creation date: 2024-06-27T22:31:24.067005
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_117T01_9000005684_41673cztM0_level2.fits modeM0/AS1T05_117T01_9000005684_41673cztM0_level2_quad_clean.evt
Size (bytes)367,986,24092,528,640
Size350.9 MB 88.2 MB
Events in quadrant A3,075,640630,189
Events in quadrant B2,520,983649,442
Events in quadrant C2,945,506600,949
Events in quadrant D4,636,018523,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125652
B0114582
C0123582
D0176382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5693100.175654%
B569360.105393%
C56931071.879501%
D56935609.836641%

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 7397 5694 2 2 0.03% 0.04%
B 7397 5694 1 1 0.01% 0.02%
C 7397 5694 100 100 1.35% 1.76%
D 7397 5694 504 504 6.81% 8.85%

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 558608 4246.63 635 622 131.4
A 13 248 43341 325.12 635 622 131.4
A 3 1 8602 60.73 635 622 131.4
B 0 245 19972 158.99 627 610 121.8
B 15 35 15850 125.14 627 610 121.8
B 12 111 15458 121.92 627 610 121.8
C 0 10 321164 2256.35 608 612 142.1
C 15 214 232621 1633.1 608 612 142.1
C 15 111 12927 86.68 608 612 142.1
D 13 249 941108 6471.19 594 578 145.3
D 2 249 808618 5559.61 594 578 145.3
D 2 120 241053 1654.56 594 578 145.3

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