ASTROSAT CZTI

Data Quality Report

Orbit 24895

Creation date: 2024-06-27T19:11:09.228762
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/AS1A08_003T13_9000003646_24895cztM0_level2.evt modeM0/AS1A08_003T13_9000003646_24895cztM0_level2_quad_clean.evt
Size (bytes)489,591,36091,621,440
Size466.9 MB 87.4 MB
Events in quadrant A3,232,852601,549
Events in quadrant B3,292,415621,756
Events in quadrant C3,566,726575,725
Events in quadrant D4,314,654542,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132872
B0134692
C0143302
D0170174

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6205220.354553%
B6205330.531829%
C62051001.611604%
D62041091.756931%

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 7515 6206 0 0 0.00% 0.00%
B 7515 6206 0 0 0.00% 0.00%
C 7515 6206 36 36 0.48% 0.58%
D 7514 6205 70 70 0.93% 1.13%

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 4 2 34842 206.3 829 815 164.9
A 13 254 9750 54.17 829 815 164.9
A 3 137 7141 38.35 829 815 164.9
B 12 111 18604 112.57 832 811 158.1
B 11 111 16603 99.91 832 811 158.1
B 14 111 15654 93.91 832 811 158.1
C 7 247 171941 932.97 791 797 183.4
C 5 112 161702 877.15 791 797 183.4
C 14 238 129494 701.58 791 797 183.4
D 1 52 913610 4796.64 786 766 190.3
D 8 195 299093 1567.59 786 766 190.3
D 7 238 73794 383.73 786 766 190.3

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