ASTROSAT CZTI

Data Quality Report

Orbit 24117

Creation date: 2024-06-27T19:02:21.586513
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/AS1C05_012T04_9000003564_24117cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24117cztM0_level2_quad_clean.evt
Size (bytes)489,663,360125,524,800
Size467.0 MB 119.7 MB
Events in quadrant A3,026,833865,343
Events in quadrant B3,132,680869,720
Events in quadrant C3,048,440823,835
Events in quadrant D5,190,911800,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129761
B0131681
C0129861
D0197271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63451101.733649%
B63451221.922774%
C63461261.985503%
D63461632.568547%

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 7265 6345 0 0 0.00% 0.00%
B 7265 6345 3 3 0.04% 0.05%
C 7266 6346 0 0 0.00% 0.00%
D 7266 6346 105 105 1.45% 1.65%

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 2 250 14940 92.06 778 764 154.0
A 14 254 10109 60.69 778 764 154.0
A 13 254 9929 59.52 778 764 154.0
B 0 228 22194 149.22 768 749 143.7
B 4 171 20010 134.02 768 749 143.7
B 0 190 18895 126.26 768 749 143.7
C 14 238 118388 692.31 738 742 169.9
C 7 247 24037 137.08 738 742 169.9
C 3 233 20376 115.54 738 742 169.9
D 8 195 2144049 11801.4 754 729 181.6
D 1 52 66106 359.97 754 729 181.6
D 13 104 47073 255.18 754 729 181.6

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