ASTROSAT CZTI

Data Quality Report

Orbit 20672

Creation date: 2024-06-27T18:18:12.653525
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/AS1A05_229T02_9000003060_20672cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20672cztM0_level2_quad_clean.evt
Size (bytes)505,788,480100,500,480
Size482.4 MB 95.8 MB
Events in quadrant A3,406,638666,643
Events in quadrant B3,782,879661,923
Events in quadrant C3,405,283639,995
Events in quadrant D4,256,990596,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145552
B0157892
C0144642
D0172542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6868400.582411%
B68671161.689238%
C6867540.786370%
D68673975.781273%

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 7819 6869 3 3 0.04% 0.04%
B 7818 6868 42 42 0.54% 0.61%
C 7818 6868 0 0 0.00% 0.00%
D 7818 6868 271 271 3.47% 3.95%

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 9 143 57516 324.54 859 843 174.6
A 5 16 28901 160.67 859 843 174.6
A 8 205 9655 50.46 859 843 174.6
B 7 220 338703 2084.61 849 830 162.1
B 0 190 42747 258.62 849 830 162.1
B 0 197 26933 161.05 849 830 162.1
C 14 238 127625 674.12 808 813 188.1
C 8 208 74350 390.91 808 813 188.1
C 7 247 46369 242.17 808 813 188.1
D 1 20 662404 3425.62 796 775 193.1
D 13 153 295008 1523.41 796 775 193.1
D 7 38 117874 606.29 796 775 193.1

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