ASTROSAT CZTI

Data Quality Report

Orbit 33219

Creation date: 2024-06-27T20:46:13.689489
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_066T01_9000004772_33219cztM0_level2.evt modeM0/AS1T04_066T01_9000004772_33219cztM0_level2_quad_clean.evt
Size (bytes)561,942,72077,097,600
Size535.9 MB 73.5 MB
Events in quadrant A2,786,543515,548
Events in quadrant B3,385,422511,339
Events in quadrant C2,870,402499,803
Events in quadrant D7,627,892446,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112543
B0134252
C0114872
D0263362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5158130.252036%
B5158961.861187%
C5158621.202016%
D51584709.112059%

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 7131 5159 6 6 0.08% 0.12%
B 7131 5159 57 57 0.80% 1.10%
C 7131 5159 47 47 0.66% 0.91%
D 7131 5159 525 525 7.36% 10.18%

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 35024 247.83 701 691 138.5
A 14 254 28359 199.72 701 691 138.5
A 13 254 9328 62.34 701 691 138.5
B 5 172 236755 1853.47 686 670 127.4
B 4 170 170602 1334.11 686 670 127.4
B 0 245 110252 860.31 686 670 127.4
C 0 10 221836 1489.73 656 664 148.5
C 1 23 30004 197.62 656 664 148.5
C 15 208 20133 131.14 656 664 148.5
D 8 195 4012160 24596.25 653 636 163.1
D 2 250 315961 1933.38 653 636 163.1
D 10 203 299126 1830.16 653 636 163.1

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