ASTROSAT CZTI

Data Quality Report

Orbit 12674

Creation date: 2024-06-27T16:30:52.845286
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_174T01_9000001876_12674cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12674cztM0_level2_quad_clean.evt
Size (bytes)531,290,88089,256,960
Size506.7 MB 85.1 MB
Events in quadrant A3,424,913578,353
Events in quadrant B5,444,598512,370
Events in quadrant C3,291,258577,513
Events in quadrant D3,462,803555,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142883
B0203242
C0141452
D0148142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68681281.863716%
B686890413.162493%
C68681021.485149%
D68681141.659872%

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 8534 6869 1 1 0.01% 0.01%
B 8533 6868 664 664 7.78% 9.67%
C 8534 6869 5 5 0.06% 0.07%
D 8534 6869 12 12 0.14% 0.17%

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 85250 478.18 863 843 176.5
A 8 15 9767 50.55 863 843 176.5
A 0 226 7667 38.66 863 843 176.5
B 4 239 1963167 12635.01 809 791 155.3
B 3 209 148832 953.18 809 791 155.3
B 3 64 73523 468.29 809 791 155.3
C 15 208 15464 75.29 837 846 194.1
C 14 234 9838 46.32 837 846 194.1
C 13 61 6067 26.89 837 846 194.1
D 1 52 147711 739.21 832 813 198.7
D 10 199 69484 345.56 832 813 198.7
D 13 104 36788 181.03 832 813 198.7

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