ASTROSAT CZTI

Data Quality Report

Orbit 09946

Creation date: 2024-06-27T15:52:47.013830
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/AS1G07_016T01_9000001420_09946cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09946cztM0_level2_quad_clean.evt
Size (bytes)503,406,72081,757,440
Size480.1 MB 78.0 MB
Events in quadrant A3,484,907496,739
Events in quadrant B3,624,700506,347
Events in quadrant C3,149,984509,441
Events in quadrant D4,509,923474,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152823
B0155652
C0143832
D0184892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70112243.194979%
B70111351.925546%
C7011320.456426%
D70112102.995293%

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 9171 7012 8 8 0.09% 0.11%
B 9171 7011 60 60 0.65% 0.86%
C 9171 7012 2 2 0.02% 0.03%
D 9171 7011 124 124 1.35% 1.77%

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 14 111 224960 1360.26 813 797 164.8
A 15 174 96425 580.29 813 797 164.8
A 8 15 27041 159.25 813 797 164.8
B 4 239 293376 1843.59 825 803 158.7
B 0 214 57761 358.91 825 803 158.7
B 4 81 25202 153.74 825 803 158.7
C 7 247 14141 72.22 800 805 184.7
C 13 61 6009 28.18 800 805 184.7
C 14 67 4242 18.61 800 805 184.7
D 2 16 685563 3310.92 782 762 206.8
D 12 233 179515 864.25 782 762 206.8
D 10 253 152446 733.37 782 762 206.8

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