ASTROSAT CZTI

Data Quality Report

Orbit 18754

Creation date: 2024-06-27T17:54:24.668168
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_156T01_9000002804_18754cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18754cztM0_level2_quad_clean.evt
Size (bytes)430,090,56093,726,720
Size410.2 MB 89.4 MB
Events in quadrant A3,144,768599,293
Events in quadrant B3,216,961609,727
Events in quadrant C3,096,803585,277
Events in quadrant D3,115,666581,845

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135502
B0137472
C0134662
D0137532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6633440.663350%
B6633560.844264%
C6633580.874416%
D6633340.512589%

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 7633 6634 0 0 0.00% 0.00%
B 7633 6634 2 2 0.03% 0.03%
C 7633 6634 0 0 0.00% 0.00%
D 7633 6634 6 6 0.08% 0.09%

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 15 192 35014 211.52 804 787 161.8
A 13 254 9204 52.02 804 787 161.8
A 11 29 8816 49.62 804 787 161.8
B 3 64 27016 171.98 799 780 152.6
B 4 216 21930 138.64 799 780 152.6
B 12 111 18438 115.75 799 780 152.6
C 14 238 118702 662.54 763 766 178.0
C 13 61 5482 26.49 763 766 178.0
C 7 220 2304 8.64 763 766 178.0
D 1 52 83541 436.79 777 753 189.5
D 13 168 73529 383.97 777 753 189.5
D 2 234 25834 132.33 777 753 189.5

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