ASTROSAT CZTI

Data Quality Report

Orbit 44188

Creation date: 2024-06-27T23:00:11.516329
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/AS1A13_074T04_9000005962_44188cztM0_level2.fits modeM0/AS1A13_074T04_9000005962_44188cztM0_level2_quad_clean.evt
Size (bytes)628,194,240115,568,640
Size599.1 MB 110.2 MB
Events in quadrant A9,550,381674,181
Events in quadrant B4,252,220827,676
Events in quadrant C3,770,400781,115
Events in quadrant D5,105,798699,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337162
B0177662
C0165162
D0206572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7417160321.612512%
B74171992.683025%
C7418961.294149%
D74183634.893502%

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 8062 7419 1085 1085 13.46% 14.62%
B 8062 7419 57 57 0.71% 0.77%
C 8063 7420 51 51 0.63% 0.69%
D 8063 7420 286 286 3.55% 3.85%

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 15 223 5220001 31996.99 785 768 163.1
A 10 83 1290614 7907.52 785 768 163.1
A 3 137 9092 51.03 785 768 163.1
B 4 170 188611 1104.78 851 822 170.0
B 0 219 174252 1020.3 851 822 170.0
B 0 230 169480 992.23 851 822 170.0
C 14 254 362456 1818.51 838 846 198.8
C 9 54 64832 321.78 838 846 198.8
C 3 233 44116 217.6 838 846 198.8
D 1 52 1061798 5148.17 820 793 206.1
D 2 249 492785 2387.23 820 793 206.1
D 13 249 189992 918.03 820 793 206.1

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