ASTROSAT CZTI

Data Quality Report

Orbit 20231209_A13_004T09_9000005992_level2

Creation date: 2023-12-13T14:52:23.119672
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_004T09_9000005992cztM0_level2.fits modeM0/AS1A13_004T09_9000005992cztM0_level2_quad_clean.evt
Size (bytes)726,082,560787,654,080
Size692.4 MB 751.2 MB
Events in quadrant A4,358,4424,837,195
Events in quadrant B4,172,7764,809,686
Events in quadrant C4,323,0744,636,875
Events in quadrant D3,661,9184,101,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016220
B016240
C016240
D016240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02378160
B01811680
C01685370
D02185690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7977225053.140200%
B7977823522.948181%
C797759781.225948%
D7976445605.716865%

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 104452 79700 0 0 0.00% 0.00%
B 104452 79757 0 0 0.00% 0.00%
C 104452 79779 0 0 0.00% 0.00%
D 104452 79696 0 0 0.00% 0.00%

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 7 110 3641 9.03 1134 1059 286.1
A 0 29 3369 8.07 1134 1059 286.1
A 15 236 3360 8.04 1134 1059 286.1
B 2 9 3787 12.61 1104 1050 217.1
B 2 8 3023 9.09 1104 1050 217.1
B 3 17 2943 8.72 1104 1050 217.1
C 3 202 3380 7.84 1144 1062 295.8
C 3 203 3295 7.55 1144 1062 295.8
C 1 81 3232 7.34 1144 1062 295.8
D 6 38 2687 5.94 1053 959 290.9
D 7 3 2657 5.84 1053 959 290.9
D 10 113 2649 5.81 1053 959 290.9

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