ASTROSAT CZTI

Data Quality Report

Orbit 27182

Creation date: 2024-06-27T19:37:26.988696
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/AS1T03_243T01_9000003918_27182cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27182cztM0_level2_quad_clean.evt
Size (bytes)549,587,520106,269,120
Size524.1 MB 101.3 MB
Events in quadrant A3,487,588741,019
Events in quadrant B3,264,249746,865
Events in quadrant C3,129,579696,451
Events in quadrant D6,356,107614,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142620
B0135060
C0130620
D0231970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60031382.298851%
B6004991.648901%
C60031242.065634%
D600396516.075296%

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 7238 6004 38 38 0.53% 0.63%
B 7239 6005 6 6 0.08% 0.10%
C 7238 6004 1 1 0.01% 0.02%
D 7238 6004 763 763 10.54% 12.71%

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 6 16 233397 1416.26 825 812 164.2
A 13 248 53926 323.42 825 812 164.2
A 0 13 10544 59.26 825 812 164.2
B 0 190 39703 252.94 812 795 153.8
B 5 172 21281 133.18 812 795 153.8
B 12 111 17461 108.34 812 795 153.8
C 14 238 124470 692.61 768 774 178.6
C 15 208 8280 42.03 768 774 178.6
C 13 61 5499 26.46 768 774 178.6
D 1 52 1597442 9078.29 739 721 175.9
D 12 1 1547872 8796.46 739 721 175.9
D 7 38 208806 1183.09 739 721 175.9

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