ASTROSAT CZTI

Data Quality Report

Orbit 24173

Creation date: 2024-06-27T19:03:05.028897
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/AS1A07_067T01_9000003578_24173cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24173cztM0_level2_quad_clean.evt
Size (bytes)570,585,60090,365,760
Size544.2 MB 86.2 MB
Events in quadrant A3,080,144610,851
Events in quadrant B3,072,831617,225
Events in quadrant C3,211,965576,786
Events in quadrant D7,516,151519,260

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123351
B0123471
C0128621
D0265191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5891400.679002%
B5892601.018330%
C58921242.104549%
D589290915.427699%

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 7236 5892 0 0 0.00% 0.00%
B 7237 5893 0 0 0.00% 0.00%
C 7237 5893 27 27 0.37% 0.46%
D 7237 5893 860 860 11.88% 14.59%

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 13 254 8145 46.54 798 784 158.2
A 0 226 7157 40.29 798 784 158.2
A 3 137 6439 35.75 798 784 158.2
B 12 111 16871 109.77 782 766 146.7
B 11 111 15101 97.7 782 766 146.7
B 0 190 14834 95.88 782 766 146.7
C 0 239 124179 722.56 744 749 170.8
C 14 238 121141 704.78 744 749 170.8
C 2 16 49194 283.6 744 749 170.8
D 7 238 3514210 20084.28 729 706 174.9
D 8 195 707055 4037.71 729 706 174.9
D 12 218 306423 1747.57 729 706 174.9

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