ASTROSAT CZTI

Data Quality Report

Orbit 11751

Creation date: 2024-06-27T16:17:41.520074
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/AS1A04_113T03_9000001738_11751cztM0_level2.evt modeM0/AS1A04_113T03_9000001738_11751cztM0_level2_quad_clean.evt
Size (bytes)565,280,64078,560,640
Size539.1 MB 74.9 MB
Events in quadrant A3,708,775485,661
Events in quadrant B4,348,313490,504
Events in quadrant C3,102,334497,489
Events in quadrant D5,527,738459,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151253
B0170442
C0132272
D0207142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6381520.814919%
B63812604.074596%
C6381170.266416%
D638168510.734995%

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 7647 6383 1 1 0.01% 0.02%
B 7647 6383 133 133 1.74% 2.08%
C 7647 6383 0 0 0.00% 0.00%
D 7647 6383 614 614 8.03% 9.62%

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 8 15 293682 1826.41 797 784 160.4
A 1 162 104838 648.85 797 784 160.4
A 1 178 55623 341.96 797 784 160.4
B 4 239 669369 4516.31 803 785 148.0
B 4 81 171227 1151.34 803 785 148.0
B 11 51 131000 879.61 803 785 148.0
C 12 4 5847 27.85 793 799 181.3
C 13 61 5844 27.83 793 799 181.3
C 14 67 4117 18.3 793 799 181.3
D 1 52 2026058 11720.28 733 713 172.8
D 8 195 536909 3102.86 733 713 172.8
D 13 104 62926 360.01 733 713 172.8

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