ASTROSAT CZTI

Data Quality Report

Orbit 26328

Creation date: 2024-06-27T19:27:31.459186
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_008T02_9000003796_26328cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26328cztM0_level2_quad_clean.evt
Size (bytes)521,372,160102,539,520
Size497.2 MB 97.8 MB
Events in quadrant A3,236,616681,733
Events in quadrant B3,274,729700,441
Events in quadrant C4,083,200650,355
Events in quadrant D4,775,986641,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135990
B0136480
C0162390
D0184040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6185240.388036%
B6185390.630558%
C61852363.815683%
D61853395.481002%

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 7485 6186 0 0 0.00% 0.00%
B 7485 6186 0 0 0.00% 0.00%
C 7485 6186 67 67 0.90% 1.08%
D 7485 6186 267 267 3.57% 4.32%

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 4 2 20608 121.42 830 815 163.0
A 13 254 10820 61.37 830 815 163.0
A 0 226 7180 39.05 830 815 163.0
B 0 230 28304 178.85 832 814 153.7
B 12 111 17659 109.6 832 814 153.7
B 11 111 15996 98.78 832 814 153.7
C 3 233 852600 4769.71 788 793 178.6
C 14 238 129633 721.44 788 793 178.6
C 2 16 24003 129.96 788 793 178.6
D 1 52 1679557 9145.99 782 763 183.6
D 11 176 94375 509.99 782 763 183.6
D 2 234 26821 141.96 782 763 183.6

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