ASTROSAT CZTI

Data Quality Report

Orbit 43600

Creation date: 2024-06-27T22:53:32.297950
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/AS1C07_001T10_9000005890_43600cztM0_level2.fits modeM0/AS1C07_001T10_9000005890_43600cztM0_level2_quad_clean.evt
Size (bytes)1,191,801,60068,031,360
Size1.1 GB 64.9 MB
Events in quadrant A4,868,138676,842
Events in quadrant B7,959,079645,415
Events in quadrant C16,048,142209,417
Events in quadrant D14,770,78794,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189262
B0278964
C0517921
D0480811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61133145.136594%
B6113138122.591199%
C6114594397.203140%
D61146114100.000000%

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 7043 6113 165 165 2.34% 2.70%
B 7043 6114 1028 1028 14.60% 16.81%
C 7043 6113 5834 5834 82.83% 95.44%
D 7043 6113 5424 5424 77.01% 88.73%

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 10 83 749986 5432.11 674 660 137.9
A 15 223 620650 4494.51 674 660 137.9
A 12 189 405431 2934.32 674 660 137.9
B 4 206 2829126 23250.76 631 614 121.7
B 5 235 1231298 10116.39 631 614 121.7
B 0 219 439534 3607.98 631 614 121.7
C 15 142 7535253 143079.39 220 221 52.7
C 15 126 4434056 84192.13 220 221 52.7
C 15 174 2202954 41826.72 220 221 52.7
D 8 192 7902624 188516.91 119 114 41.9
D 4 212 2598443 61983.97 119 114 41.9
D 4 216 1290066 30772.22 119 114 41.9

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