ASTROSAT CZTI

Data Quality Report

Orbit 16637

Creation date: 2024-06-27T17:25:40.020230
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_007T07_9000002452_16637cztM0_level2.evt modeM0/AS1C04_007T07_9000002452_16637cztM0_level2_quad_clean.evt
Size (bytes)540,789,12068,633,280
Size515.7 MB 65.5 MB
Events in quadrant A3,266,764398,942
Events in quadrant B3,624,167404,734
Events in quadrant C4,382,461395,530
Events in quadrant D4,622,604384,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145642
B0152701
C0174591
D0186391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7104831.168356%
B71041061.492117%
C71044456.264077%
D71041131.590653%

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 7500 7106 1 1 0.01% 0.01%
B 7500 7106 2 2 0.03% 0.03%
C 7500 7106 247 247 3.29% 3.48%
D 7500 7106 27 27 0.36% 0.38%

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 9 143 21388 120.64 839 821 170.5
A 15 223 10760 58.3 839 821 170.5
A 0 226 7381 38.48 839 821 170.5
B 15 35 120402 729.82 844 820 163.9
B 0 214 104959 635.57 844 820 163.9
B 0 198 45809 274.57 844 820 163.9
C 7 247 993825 5269.67 797 802 188.4
C 3 233 129072 680.69 797 802 188.4
C 14 238 121097 638.37 797 802 188.4
D 1 52 1424717 7064.35 819 795 201.6
D 5 222 49561 241.94 819 795 201.6
D 2 234 29227 141.05 819 795 201.6

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