ASTROSAT CZTI

Data Quality Report

Orbit 15862

Creation date: 2024-06-27T17:14:28.267577
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_143T01_9000002344_15862cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15862cztM0_level2_quad_clean.evt
Size (bytes)523,644,48093,948,480
Size499.4 MB 89.6 MB
Events in quadrant A5,093,290597,148
Events in quadrant B3,674,439623,314
Events in quadrant C3,436,551592,259
Events in quadrant D3,215,954581,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195763
B0151472
C0143182
D0137962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64534296.648071%
B64531542.386487%
C64531171.813110%
D6453580.898807%

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 8959 6456 209 209 2.33% 3.24%
B 8959 6456 38 38 0.42% 0.59%
C 8959 6456 0 0 0.00% 0.00%
D 8959 6456 4 4 0.04% 0.06%

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 15 239 1874501 11159.94 837 822 167.9
A 0 226 7513 39.85 837 822 167.9
A 12 194 6131 31.62 837 822 167.9
B 4 173 150145 915.26 860 841 163.1
B 10 245 77344 468.98 860 841 163.1
B 4 216 25033 148.3 860 841 163.1
C 14 238 127956 661.83 825 832 192.1
C 3 233 67832 348.82 825 832 192.1
C 0 207 22573 113.19 825 832 192.1
D 2 234 24757 117.83 835 812 203.2
D 12 110 17956 84.36 835 812 203.2
D 7 223 13104 60.49 835 812 203.2

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