ASTROSAT CZTI

Data Quality Report

Orbit 34300

Creation date: 2022-01-31T17:46:06.736179
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/AS1T04_086T01_9000004890_34300cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34300cztM0_level2_quad_clean.evt
Size (bytes)1,328,040,000227,194,560
Size1.2 GB 216.7 MB
Events in quadrant A7,615,5581,460,075
Events in quadrant B10,455,5451,452,631
Events in quadrant C8,347,3161,494,273
Events in quadrant D12,744,8041,393,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329035
B0411694
C0340544
D0485734

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15669330.210607%
B156697885.029038%
C156691340.855192%
D1566910446.662837%

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 19846 15672 11 11 0.06% 0.07%
B 19846 15672 518 518 2.61% 3.31%
C 19846 15672 96 96 0.48% 0.61%
D 19846 15672 863 863 4.35% 5.51%

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 15 47 303201 840.21 1805 1771 358.8
A 7 16 169935 468.74 1805 1771 358.8
A 10 83 62229 168.52 1805 1771 358.8
B 5 172 2262439 6810.85 1762 1717 331.9
B 4 251 406699 1220.08 1762 1717 331.9
B 4 171 261957 784.02 1762 1717 331.9
C 15 214 661872 1629.19 1769 1787 405.2
C 14 254 333185 817.94 1769 1787 405.2
C 0 10 181255 442.96 1769 1787 405.2
D 8 195 1816341 3939.72 1735 1698 460.6
D 7 223 1460840 3167.9 1735 1698 460.6
D 10 118 1436038 3114.05 1735 1698 460.6

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