ASTROSAT CZTI

Data Quality Report

Orbit 21975

Creation date: 2024-06-27T18:34:46.960446
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/AS1A07_094T01_9000003248_21975cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21975cztM0_level2_quad_clean.evt
Size (bytes)564,857,28095,780,160
Size538.7 MB 91.3 MB
Events in quadrant A3,387,301630,550
Events in quadrant B3,652,531631,353
Events in quadrant C3,359,779605,407
Events in quadrant D6,245,173558,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143312
B0151162
C0142032
D0232994

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6816751.100352%
B68161291.892606%
C68161231.804577%
D68156759.904622%

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 7686 6816 1 1 0.01% 0.01%
B 7686 6816 28 28 0.36% 0.41%
C 7686 6816 0 0 0.00% 0.00%
D 7685 6815 570 570 7.42% 8.36%

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 79 16507 88.91 872 855 176.0
A 13 254 12660 67.06 872 855 176.0
A 0 226 7532 37.93 872 855 176.0
B 3 64 150514 909.87 860 839 164.5
B 0 230 77687 467.16 860 839 164.5
B 0 190 28999 171.18 860 839 164.5
C 14 238 130800 671.32 827 833 193.6
C 13 61 5850 25.91 827 833 193.6
C 0 10 2951 10.94 827 833 193.6
D 7 238 2249217 11341.27 819 795 198.3
D 12 227 297839 1498.32 819 795 198.3
D 1 52 244964 1231.61 819 795 198.3

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