ASTROSAT CZTI

Data Quality Report

Orbit 24781

Creation date: 2024-06-27T19:09:49.576354
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_147T01_9000003624_24781cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24781cztM0_level2_quad_clean.evt
Size (bytes)519,975,36067,478,400
Size495.9 MB 64.4 MB
Events in quadrant A3,479,293429,393
Events in quadrant B4,600,183380,197
Events in quadrant C3,429,881403,357
Events in quadrant D3,815,199394,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139292
B0174843
C0137102
D0151602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6234911.459737%
B62335709.144874%
C62331081.732713%
D62331091.748757%

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 7533 6234 0 0 0.00% 0.00%
B 7532 6233 444 444 5.89% 7.12%
C 7532 6233 0 0 0.00% 0.00%
D 7532 6233 36 36 0.48% 0.58%

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 13 254 9470 47.82 901 888 179.5
A 0 226 7734 38.15 901 888 179.5
A 3 137 7624 37.53 901 888 179.5
B 3 64 1309505 8293.62 840 823 157.8
B 12 111 18861 114.31 840 823 157.8
B 11 111 17301 104.43 840 823 157.8
C 14 238 136310 702.01 840 852 193.0
C 1 16 9849 46.63 840 852 193.0
C 13 61 5974 26.54 840 852 193.0
D 8 195 343231 1659.0 849 825 206.4
D 1 52 255309 1233.01 849 825 206.4
D 2 234 22470 104.87 849 825 206.4

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