ASTROSAT CZTI

Data Quality Report

Orbit 15569

Creation date: 2024-06-27T17:10:19.540783
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/AS1A04_198T01_9000002308_15569cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15569cztM0_level2_quad_clean.evt
Size (bytes)457,136,64098,830,080
Size436.0 MB 94.3 MB
Events in quadrant A3,157,122633,377
Events in quadrant B3,222,972647,590
Events in quadrant C3,285,166628,234
Events in quadrant D3,723,782616,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138793
B0138542
C0138752
D0155612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701120.179078%
B6701230.343232%
C6701520.776004%
D6701721.074466%

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 7707 6703 1 1 0.01% 0.01%
B 7707 6703 4 4 0.05% 0.06%
C 7707 6703 2 2 0.03% 0.03%
D 7707 6703 49 49 0.64% 0.73%

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 14 238 72344 437.66 800 783 163.5
A 0 226 6991 37.97 800 783 163.5
A 3 80 6234 33.34 800 783 163.5
B 4 173 19578 122.02 805 784 154.0
B 12 111 18093 112.38 805 784 154.0
B 11 111 15474 95.38 805 784 154.0
C 14 238 120533 652.4 781 785 183.6
C 3 233 116024 627.83 781 785 183.6
C 13 61 5623 26.36 781 785 183.6
D 1 52 398244 2072.98 787 764 191.7
D 7 223 98926 511.94 787 764 191.7
D 7 38 83706 432.57 787 764 191.7

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