ASTROSAT CZTI

Data Quality Report

Orbit 03284

Creation date: 2024-06-27T14:27:06.503161
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/AS1G05_228T02_9000000446_03284cztM0_level2.evt modeM0/AS1G05_228T02_9000000446_03284cztM0_level2_quad_clean.evt
Size (bytes)511,666,56068,748,480
Size488.0 MB 65.6 MB
Events in quadrant A3,355,021415,106
Events in quadrant B4,791,751402,343
Events in quadrant C3,457,504405,330
Events in quadrant D3,446,401401,066

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142353
B0186922
C0146452
D0147792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6572841.278150%
B65723234.914790%
C6572741.125989%
D6572731.110773%

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 8967 6574 40 40 0.45% 0.61%
B 8967 6574 203 203 2.26% 3.09%
C 8967 6574 36 36 0.40% 0.55%
D 8967 6574 58 58 0.65% 0.88%

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 0 50 145803 895.02 793 777 162.0
A 0 118 62871 383.21 793 777 162.0
A 14 249 58589 356.78 793 777 162.0
B 15 204 759847 4956.63 797 780 153.1
B 2 249 506848 3304.57 797 780 153.1
B 14 167 385760 2513.88 797 780 153.1
C 14 223 310621 1743.09 763 767 177.8
C 6 80 60287 334.83 763 767 177.8
C 1 16 59069 327.98 763 767 177.8
D 13 223 285116 1568.51 757 736 181.3
D 13 239 162296 891.09 757 736 181.3
D 5 233 90447 494.8 757 736 181.3

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