ASTROSAT CZTI

Data Quality Report

Orbit 20277

Creation date: 2024-06-27T18:13:21.589345
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_175T01_9000003004_20277cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20277cztM0_level2_quad_clean.evt
Size (bytes)473,921,28090,086,400
Size452.0 MB 85.9 MB
Events in quadrant A3,073,131592,166
Events in quadrant B3,249,341601,136
Events in quadrant C3,036,427571,669
Events in quadrant D4,568,110525,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130592
B0136712
C0129382
D0178992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6265240.383081%
B6265590.941740%
C6265400.638468%
D62654537.230646%

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 7440 6266 11 11 0.15% 0.18%
B 7440 6266 13 13 0.17% 0.21%
C 7440 6266 0 0 0.00% 0.00%
D 7440 6266 320 320 4.30% 5.11%

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 14 238 36375 229.82 772 757 155.0
A 8 205 31878 200.8 772 757 155.0
A 4 2 31034 195.36 772 757 155.0
B 7 220 104548 710.2 774 755 146.1
B 0 197 54302 366.39 774 755 146.1
B 4 142 29768 198.52 774 755 146.1
C 14 238 116731 666.37 743 749 174.1
C 3 233 18936 104.49 743 749 174.1
C 13 61 5191 25.52 743 749 174.1
D 1 52 1264144 7241.72 721 701 174.5
D 12 218 413762 2367.55 721 701 174.5
D 11 176 56141 317.77 721 701 174.5

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