ASTROSAT CZTI

Data Quality Report

Orbit 16860

Creation date: 2024-06-27T17:28:48.059860
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_034T01_9000002500_16860cztM0_level2.evt modeM0/AS1T03_034T01_9000002500_16860cztM0_level2_quad_clean.evt
Size (bytes)355,697,28054,512,640
Size339.2 MB 52.0 MB
Events in quadrant A2,277,338334,264
Events in quadrant B2,440,087345,569
Events in quadrant C2,429,393326,786
Events in quadrant D3,308,106316,256

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096241
B0101911
C099121
D0130231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4658160.343495%
B4658460.987548%
C4658450.966080%
D46582304.937742%

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 5814 4660 0 0 0.00% 0.00%
B 5814 4660 1 1 0.02% 0.02%
C 5814 4660 0 0 0.00% 0.00%
D 5814 4660 142 142 2.44% 3.05%

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 23 14197 114.74 587 575 118.7
A 0 226 6134 46.83 587 575 118.7
A 3 137 4272 31.14 587 575 118.7
B 15 35 105460 938.42 586 572 111.8
B 3 209 16446 142.02 586 572 111.8
B 0 197 13032 111.48 586 572 111.8
C 3 233 131240 983.77 566 570 132.8
C 14 238 88367 660.99 566 570 132.8
C 13 61 4021 25.98 566 570 132.8
D 1 52 1170918 8540.99 561 545 137.0
D 2 234 18613 131.85 561 545 137.0
D 15 145 13029 91.1 561 545 137.0

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