ASTROSAT CZTI

Data Quality Report

Orbit 21395

Creation date: 2024-06-27T18:27:18.408074
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/AS1C04_010T01_9000003158_21395cztM0_level2.evt modeM0/AS1C04_010T01_9000003158_21395cztM0_level2_quad_clean.evt
Size (bytes)646,473,60068,031,360
Size616.5 MB 64.9 MB
Events in quadrant A3,685,493410,237
Events in quadrant B3,613,621415,800
Events in quadrant C4,692,078394,392
Events in quadrant D7,141,814379,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151312
B0147452
C0183312
D0258432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65881171.775956%
B65871271.928040%
C65873184.827691%
D658786113.071201%

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 7723 6588 0 0 0.00% 0.00%
B 7722 6587 5 5 0.06% 0.08%
C 7722 6587 52 52 0.67% 0.79%
D 7722 6587 662 662 8.57% 10.05%

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 5 168 188468 1063.11 893 879 176.5
A 5 203 26734 146.53 893 879 176.5
A 5 16 14521 77.31 893 879 176.5
B 0 190 43762 255.71 884 863 167.8
B 0 230 35243 204.93 884 863 167.8
B 0 228 20401 116.46 884 863 167.8
C 3 233 1265275 6448.4 844 850 196.1
C 14 238 132817 673.01 844 850 196.1
C 13 61 5957 26.05 844 850 196.1
D 12 235 2901136 14064.91 844 820 206.2
D 1 52 623588 3020.07 844 820 206.2
D 1 20 217000 1048.35 844 820 206.2

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