ASTROSAT CZTI

Data Quality Report

Orbit 28231

Creation date: 2024-06-27T19:49:26.807056
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/AS1C05_019T04_9000004074_28231cztM0_level2.evt modeM0/AS1C05_019T04_9000004074_28231cztM0_level2_quad_clean.evt
Size (bytes)525,090,240116,271,360
Size500.8 MB 110.9 MB
Events in quadrant A3,342,123768,284
Events in quadrant B3,633,642780,713
Events in quadrant C3,545,771740,334
Events in quadrant D4,879,281717,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150460
B0157100
C0153560
D0195130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7378741.002982%
B73791201.626237%
C73791502.032796%
D73791752.371595%

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 7573 7379 0 0 0.00% 0.00%
B 7574 7380 28 28 0.37% 0.38%
C 7574 7380 17 17 0.22% 0.23%
D 7574 7380 117 117 1.54% 1.59%

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 13 254 11703 62.18 865 846 174.6
A 3 137 8702 45.0 865 846 174.6
A 0 226 7340 37.2 865 846 174.6
B 10 245 184651 1118.85 855 833 164.3
B 4 200 30383 179.86 855 833 164.3
B 0 183 26496 156.2 855 833 164.3
C 3 233 203250 1057.58 819 822 191.4
C 14 238 132396 687.41 819 822 191.4
C 5 37 15528 76.83 819 822 191.4
D 1 52 1245491 6368.28 824 801 195.5
D 8 195 184922 942.03 824 801 195.5
D 5 222 161339 821.37 824 801 195.5

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