ASTROSAT CZTI

Data Quality Report

Orbit 17140

Creation date: 2024-06-27T17:32:48.400960
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/AS1C04_004T01_9000002542_17140cztM0_level2.evt modeM0/AS1C04_004T01_9000002542_17140cztM0_level2_quad_clean.evt
Size (bytes)717,410,88073,673,280
Size684.2 MB 70.3 MB
Events in quadrant A3,190,684458,812
Events in quadrant B3,278,918469,508
Events in quadrant C8,759,618420,859
Events in quadrant D6,048,023416,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137242
B0139132
C0307002
D0224052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6665650.975244%
B6665891.335334%
C666599514.928732%
D66655197.786947%

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 7615 6666 0 0 0.00% 0.00%
B 7615 6666 0 0 0.00% 0.00%
C 7615 6665 253 253 3.32% 3.80%
D 7615 6666 606 606 7.96% 9.09%

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 12 189 20397 116.45 825 809 168.2
A 0 226 7183 37.89 825 809 168.2
A 3 137 6055 31.19 825 809 168.2
B 4 216 37713 233.81 827 806 157.9
B 12 111 19197 116.51 827 806 157.9
B 11 111 16649 100.37 827 806 157.9
C 3 233 5636676 31294.58 771 777 180.1
C 14 238 119002 656.47 771 777 180.1
C 13 61 5502 26.24 771 777 180.1
D 13 232 1150766 5953.89 788 766 193.2
D 13 200 714989 3697.74 788 766 193.2
D 13 249 546667 2826.29 788 766 193.2

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