ASTROSAT CZTI

Data Quality Report

Orbit 15926

Creation date: 2024-06-27T17:15:27.968457
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/AS1G08_066T02_9000002346_15926cztM0_level2.evt modeM0/AS1G08_066T02_9000002346_15926cztM0_level2_quad_clean.evt
Size (bytes)462,424,32092,370,240
Size441.0 MB 88.1 MB
Events in quadrant A3,470,118582,134
Events in quadrant B3,407,283600,982
Events in quadrant C3,447,975570,467
Events in quadrant D3,208,505561,534

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016224
B016222
C016224
D016224

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170772441
B0170582467
C0169572413
D0169302458

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69141812.617877%
B69031642.375779%
C69151932.791034%
D68971081.565898%

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 8140 7302 1 1 0.01% 0.01%
B 8131 7296 0 0 0.00% 0.00%
C 8138 7327 0 0 0.00% 0.00%
D 8137 7303 3 3 0.04% 0.04%

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 15 239 209192 1200.41 847 826 173.6
A 0 226 7008 35.61 847 826 173.6
A 12 194 6328 31.7 847 826 173.6
B 4 173 34999 206.83 850 828 165.2
B 12 111 19868 115.25 850 828 165.2
B 0 189 19474 112.86 850 828 165.2
C 14 238 124133 632.33 820 826 195.0
C 3 233 103556 526.81 820 826 195.0
C 7 247 18835 92.35 820 826 195.0
D 10 40 28605 135.54 831 804 205.1
D 2 234 25083 118.37 831 804 205.1
D 7 223 12821 58.59 831 804 205.1

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