ASTROSAT CZTI

Data Quality Report

Orbit 04850

Creation date: 2024-06-27T14:47:57.102091
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/AS1G05_002T01_9000000616_04850cztM0_level2.evt modeM0/AS1G05_002T01_9000000616_04850cztM0_level2_quad_clean.evt
Size (bytes)432,806,40082,958,400
Size412.8 MB 79.1 MB
Events in quadrant A2,987,367522,845
Events in quadrant B3,080,439520,833
Events in quadrant C3,070,227520,062
Events in quadrant D3,529,263496,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134493
B0136522
C0138692
D0151812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6473220.339873%
B6473350.540708%
C6473260.401668%
D64731071.653020%

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 7648 6474 1 1 0.01% 0.02%
B 7648 6474 2 2 0.03% 0.03%
C 7648 6474 18 18 0.24% 0.28%
D 7648 6474 69 69 0.90% 1.07%

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 8 6 42894 280.52 742 726 150.3
A 0 50 31233 202.94 742 726 150.3
A 8 15 27392 177.39 742 726 150.3
B 14 167 103433 722.86 750 734 142.1
B 10 16 20489 139.05 750 734 142.1
B 4 239 13626 90.74 750 734 142.1
C 9 247 271224 1648.14 711 715 164.1
C 12 4 12727 73.19 711 715 164.1
C 13 61 5799 30.98 711 715 164.1
D 13 235 211428 1220.01 708 685 172.7
D 2 136 179200 1033.44 708 685 172.7
D 10 172 155437 895.87 708 685 172.7

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