ASTROSAT CZTI

Data Quality Report

Orbit 26745

Creation date: 2024-06-27T19:32:22.615267
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/AS1T03_223T01_9000003850_26745cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26745cztM0_level2_quad_clean.evt
Size (bytes)781,738,56092,344,320
Size745.5 MB 88.1 MB
Events in quadrant A3,320,061622,304
Events in quadrant B8,379,097599,624
Events in quadrant C3,326,653615,816
Events in quadrant D8,200,042493,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0131
D0131

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143130
B0295100
C0141360
D0289470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6662250.375263%
B6642152022.884673%
C6659851.276468%
D6655144321.682945%

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 7775 6676 2 2 0.03% 0.03%
B 7775 6675 933 933 12.00% 13.98%
C 7775 6675 8 8 0.10% 0.12%
D 7774 6672 1248 1248 16.05% 18.71%

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 11 29 163967 1004.26 813 799 162.5
A 13 254 11275 64.48 813 799 162.5
A 4 2 10670 60.75 813 799 162.5
B 0 189 5335283 36665.75 764 746 145.5
B 10 246 19405 128.25 764 746 145.5
B 12 111 17486 115.06 764 746 145.5
C 14 238 126551 684.98 782 788 183.6
C 2 16 109577 592.53 782 788 183.6
C 15 208 33240 176.75 782 788 183.6
D 7 80 4391699 25557.72 696 676 171.8
D 1 52 1035322 6022.1 696 676 171.8
D 2 250 77288 445.91 696 676 171.8

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