ASTROSAT CZTI

Data Quality Report

Orbit 20200512_A07_127T03_9000003662_level2

Creation date: 2020-05-17T02:00:27.609953
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_127T03_9000003662cztM0_level2.evt modeM0/AS1A07_127T03_9000003662cztM0_level2_quad_clean.evt
Size (bytes)7,750,967,0401,320,217,920
Size7.2 GB 1.2 GB
Events in quadrant A49,095,2518,410,200
Events in quadrant B51,088,1338,573,619
Events in quadrant C58,921,6828,162,809
Events in quadrant D68,867,9147,955,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02097770
B02146640
C02378290
D02714370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020460
B020460
C020460
D020460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01390
B01390
C01390
D01390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10045016221.614734%
B10045020132.003982%
C10045035383.522150%
D10045039983.980090%

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 114451 100467 3 3 0.00% 0.00%
B 114451 100468 80 80 0.07% 0.08%
C 114451 100468 557 557 0.49% 0.55%
D 114451 100468 2463 2463 2.15% 2.45%

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 154791 56.34 12699 12432 2526.9
A 3 137 115487 40.78 12699 12432 2526.9
A 0 226 108448 38.0 12699 12432 2526.9
B 3 64 383435 156.64 12634 12314 2369.2
B 0 190 375754 153.4 12634 12314 2369.2
B 12 111 294811 119.24 12634 12314 2369.2
C 7 247 9014116 3165.17 12191 12275 2844.0
C 14 238 1927345 673.36 12191 12275 2844.0
C 2 16 193440 63.7 12191 12275 2844.0
D 7 238 9085005 3046.18 12337 12006 2978.5
D 1 52 7833129 2625.87 12337 12006 2978.5
D 8 195 3538882 1184.12 12337 12006 2978.5

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