ASTROSAT CZTI

Data Quality Report

Orbit 46621

Creation date: 2024-06-27T23:25:31.398341
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_080T02_9000006242_46621cztM0_level2.fits modeM0/AS1A13_080T02_9000006242_46621cztM0_level2_quad_clean.evt
Size (bytes)484,516,800110,862,720
Size462.1 MB 105.7 MB
Events in quadrant A6,423,972728,126
Events in quadrant B3,674,140759,861
Events in quadrant C2,930,897729,195
Events in quadrant D4,366,031654,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233662
B0157812
C0142582
D0177752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69582673.837310%
B69582103.018109%
C6958941.350963%
D69582373.406151%

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 7888 6959 12 12 0.15% 0.17%
B 7888 6959 64 64 0.81% 0.92%
C 7888 6959 2 2 0.03% 0.03%
D 7888 6959 98 98 1.24% 1.41%

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 3452551 22698.97 732 715 152.1
A 9 191 67663 440.24 732 715 152.1
A 0 247 35105 226.15 732 715 152.1
B 15 201 256604 1798.05 735 713 142.3
B 4 171 223243 1563.63 735 713 142.3
B 5 32 93343 650.87 735 713 142.3
C 14 254 35149 202.09 734 738 170.3
C 1 3 11840 65.2 734 738 170.3
C 9 54 7577 40.16 734 738 170.3
D 1 52 720606 4003.73 724 701 179.8
D 8 176 191687 1062.16 724 701 179.8
D 15 127 129705 717.45 724 701 179.8

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