ASTROSAT CZTI

Data Quality Report

Orbit 15751

Creation date: 2024-06-27T17:13:01.593332
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/AS1T02_088T01_9000002332_15751cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15751cztM0_level2_quad_clean.evt
Size (bytes)475,606,08076,440,960
Size453.6 MB 72.9 MB
Events in quadrant A3,484,138459,408
Events in quadrant B3,588,330465,974
Events in quadrant C3,520,536449,655
Events in quadrant D3,323,899441,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149174
B0149943
C0149063
D0149023

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71552052.865129%
B71552313.228512%
C71552433.396226%
D71551722.403913%

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 7681 7158 0 0 0.00% 0.00%
B 7681 7158 7 7 0.09% 0.10%
C 7681 7158 0 0 0.00% 0.00%
D 7681 7158 2 2 0.03% 0.03%

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 3 80 34894 188.42 891 872 180.6
A 15 174 18689 98.67 891 872 180.6
A 0 226 7693 37.78 891 872 180.6
B 0 189 28929 161.34 892 871 173.9
B 3 64 27604 153.72 892 871 173.9
B 12 111 20813 114.67 892 871 173.9
C 14 238 129706 633.83 859 865 203.3
C 3 233 32032 153.33 859 865 203.3
C 13 61 5914 24.84 859 865 203.3
D 2 234 26544 119.92 867 839 214.3
D 1 52 22686 101.92 867 839 214.3
D 10 70 14599 64.2 867 839 214.3

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