ASTROSAT CZTI

Data Quality Report

Orbit 11777

Creation date: 2024-06-27T16:18:10.490861
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/AS1C03_024T01_9000001742_11777cztM0_level2.evt modeM0/AS1C03_024T01_9000001742_11777cztM0_level2_quad_clean.evt
Size (bytes)563,382,72083,462,400
Size537.3 MB 79.6 MB
Events in quadrant A3,331,896529,695
Events in quadrant B6,591,491502,465
Events in quadrant C3,035,298529,703
Events in quadrant D3,647,683496,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142283
B0242802
C0136162
D0153682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6720480.714286%
B67206319.389881%
C6720380.565476%
D67202113.139881%

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 7771 6722 0 0 0.00% 0.00%
B 7771 6722 538 538 6.92% 8.00%
C 7771 6722 4 4 0.05% 0.06%
D 7771 6722 130 130 1.67% 1.93%

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 1 162 82337 507.57 789 773 160.7
A 8 15 76474 471.09 789 773 160.7
A 1 178 40755 248.81 789 773 160.7
B 10 16 2764434 18547.47 774 755 149.0
B 4 239 488064 3270.4 774 755 149.0
B 15 204 121613 811.1 774 755 149.0
C 1 3 9855 50.37 774 781 180.2
C 13 61 5575 26.61 774 781 180.2
C 8 222 5393 25.6 774 781 180.2
D 1 52 273969 1501.53 757 735 182.0
D 13 104 237977 1303.74 757 735 182.0
D 13 137 79564 433.2 757 735 182.0

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