ASTROSAT CZTI

Data Quality Report

Orbit 37115

Creation date: 2024-06-27T21:35:44.678104
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/AS1A09_138T04_9000005282_37115cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37115cztM0_level2_quad_clean.evt
Size (bytes)446,621,76053,619,840
Size425.9 MB 51.1 MB
Events in quadrant A2,983,515324,790
Events in quadrant B3,000,855327,933
Events in quadrant C2,762,192313,130
Events in quadrant D4,427,399293,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118083
B0119272
C0109862
D0167352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5187490.944669%
B5187921.773665%
C518740.077116%
D51872474.761905%

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 7281 5188 41 41 0.56% 0.79%
B 7280 5186 50 50 0.69% 0.96%
C 7281 5187 4 4 0.05% 0.08%
D 7280 5187 245 245 3.37% 4.72%

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 10 83 263096 1977.64 666 654 132.7
A 15 237 105856 792.75 666 654 132.7
A 9 143 22740 166.43 666 654 132.7
B 5 172 215002 1743.91 651 636 122.9
B 5 200 83519 674.27 651 636 122.9
B 15 85 47529 381.48 651 636 122.9
C 15 214 225104 1547.25 631 636 145.1
C 0 10 56296 383.66 631 636 145.1
C 15 208 14481 95.43 631 636 145.1
D 1 52 744893 4850.83 633 617 153.4
D 12 233 347956 2263.79 633 617 153.4
D 13 249 276585 1798.62 633 617 153.4

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