ASTROSAT CZTI

Data Quality Report

Orbit 12087

Creation date: 2024-06-27T16:22:15.726478
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/AS1G08_065T01_9000001796_12087cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12087cztM0_level2_quad_clean.evt
Size (bytes)551,234,880103,060,800
Size525.7 MB 98.3 MB
Events in quadrant A3,990,446673,536
Events in quadrant B4,260,074669,664
Events in quadrant C3,211,361681,302
Events in quadrant D4,794,515646,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160513
B0169672
C0137782
D0185482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64583235.001548%
B64585007.742335%
C64581342.074946%
D64584016.209353%

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 8984 6459 89 89 0.99% 1.38%
B 8984 6459 194 194 2.16% 3.00%
C 8984 6461 0 0 0.00% 0.00%
D 8984 6460 171 171 1.90% 2.65%

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 13 251 504765 3040.24 824 809 165.8
A 1 162 132405 793.89 824 809 165.8
A 1 178 51856 307.95 824 809 165.8
B 4 239 957232 6256.17 815 796 152.9
B 15 204 84184 545.45 815 796 152.9
B 12 111 16439 102.32 815 796 152.9
C 13 61 6032 27.75 821 823 187.7
C 14 67 4995 22.22 821 823 187.7
C 8 208 4613 20.19 821 823 187.7
D 1 52 582522 3030.17 807 786 192.0
D 8 195 423436 2201.51 807 786 192.0
D 14 34 233173 1210.47 807 786 192.0

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