ASTROSAT CZTI

Data Quality Report

Orbit 12058

Creation date: 2024-06-27T16:21:50.800077
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/AS1A03_085T02_9000001784_12058cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12058cztM0_level2_quad_clean.evt
Size (bytes)558,457,92093,000,960
Size532.6 MB 88.7 MB
Events in quadrant A3,302,329613,978
Events in quadrant B5,132,513601,519
Events in quadrant C3,091,030588,989
Events in quadrant D4,941,837554,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140683
B0197232
C0136722
D0189312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6561751.143118%
B656173111.141594%
C6561210.320073%
D65613214.892547%

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 7742 6563 2 2 0.03% 0.03%
B 7742 6562 341 341 4.40% 5.20%
C 7742 6563 0 0 0.00% 0.00%
D 7742 6563 286 286 3.69% 4.36%

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 1 162 41549 242.29 826 809 168.1
A 1 178 17723 100.59 826 809 168.1
A 1 161 16089 90.87 826 809 168.1
B 4 239 1693377 11199.91 793 775 151.1
B 4 206 244612 1613.46 793 775 151.1
B 15 204 64532 421.88 793 775 151.1
C 5 96 26566 140.64 785 790 183.3
C 13 61 5849 27.6 785 790 183.3
C 14 234 2611 9.94 785 790 183.3
D 1 52 1605227 8666.43 773 752 185.1
D 8 195 295224 1590.56 773 752 185.1
D 13 249 79712 426.5 773 752 185.1

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