ASTROSAT CZTI

Data Quality Report

Orbit 27488

Creation date: 2024-06-27T19:40:33.539540
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/AS1T03_249T01_9000003934_27488cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27488cztM0_level2_quad_clean.evt
Size (bytes)497,623,68090,990,720
Size474.6 MB 86.8 MB
Events in quadrant A3,120,075600,122
Events in quadrant B3,277,594608,416
Events in quadrant C3,219,956571,883
Events in quadrant D5,037,895547,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127740
B0132710
C0131010
D0190100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6122200.326691%
B6122641.045410%
C6122911.486442%
D61224226.893172%

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 7452 6123 0 0 0.00% 0.00%
B 7452 6123 15 15 0.20% 0.24%
C 7452 6123 14 14 0.19% 0.23%
D 7452 6123 351 351 4.71% 5.73%

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 9386 53.38 807 794 161.0
A 0 13 8739 49.36 807 794 161.0
A 3 137 7183 39.69 807 794 161.0
B 3 64 106555 703.3 800 779 150.4
B 0 230 17759 112.9 800 779 150.4
B 12 111 17687 112.42 800 779 150.4
C 14 238 125831 697.81 767 773 179.2
C 15 208 47601 261.3 767 773 179.2
C 10 22 41444 226.94 767 773 179.2
D 1 52 2109921 11866.03 758 741 177.7
D 2 250 25711 140.48 758 741 177.7
D 2 234 21399 116.22 758 741 177.7

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