ASTROSAT CZTI

Data Quality Report

Orbit 08279

Creation date: 2024-06-27T15:30:30.334949
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/AS1G07_065T02_9000001150_08279cztM0_level2.evt modeM0/AS1G07_065T02_9000001150_08279cztM0_level2_quad_clean.evt
Size (bytes)459,178,56072,074,880
Size437.9 MB 68.7 MB
Events in quadrant A3,076,826441,869
Events in quadrant B3,412,125442,342
Events in quadrant C3,034,571439,824
Events in quadrant D3,959,416423,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130314
B0139471
C0130351
D0157381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222941.510768%
B62231422.281858%
C6223931.494456%
D62233445.527880%

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 7473 6223 1 1 0.01% 0.02%
B 7473 6223 28 28 0.37% 0.45%
C 7473 6223 2 2 0.03% 0.03%
D 7473 6223 217 217 2.90% 3.49%

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 0 254 33224 205.12 790 774 158.2
A 0 226 7619 43.27 790 774 158.2
A 12 194 7077 39.84 790 774 158.2
B 0 214 132948 915.38 787 769 144.4
B 10 16 66011 451.82 787 769 144.4
B 11 51 62078 424.58 787 769 144.4
C 9 54 44813 254.33 765 767 173.2
C 13 61 5880 29.52 765 767 173.2
C 1 3 4365 20.78 765 767 173.2
D 1 52 786140 4127.17 747 731 190.3
D 8 195 83344 434.12 747 731 190.3
D 8 230 41321 213.29 747 731 190.3

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