ASTROSAT CZTI

Data Quality Report

Orbit 03175

Creation date: 2024-06-27T14:25:33.443791
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/AS1G05_218T02_9000000434_03175cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03175cztM0_level2_quad_clean.evt
Size (bytes)546,649,92096,661,440
Size521.3 MB 92.2 MB
Events in quadrant A3,817,890617,026
Events in quadrant B3,671,742626,769
Events in quadrant C4,130,525606,713
Events in quadrant D4,453,203581,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165412
B0159211
C0174411
D0183481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71002914.098592%
B71001722.422535%
C71002854.014085%
D71004205.915493%

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 7185 7102 125 125 1.74% 1.76%
B 7185 7102 8 8 0.11% 0.11%
C 7185 7102 165 165 2.30% 2.32%
D 7185 7102 265 265 3.69% 3.73%

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 14 249 442733 2719.17 799 779 162.5
A 12 247 143781 879.84 799 779 162.5
A 8 15 110549 675.37 799 779 162.5
B 4 80 224565 1415.43 816 794 158.1
B 4 81 116024 728.87 816 794 158.1
B 2 249 38748 240.07 816 794 158.1
C 1 192 999867 5418.65 783 785 184.4
C 6 80 37291 198.0 783 785 184.4
C 14 223 17532 90.83 783 785 184.4
D 5 233 879548 4607.46 778 751 190.7
D 2 136 224672 1174.0 778 751 190.7
D 13 114 78988 410.19 778 751 190.7

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