ASTROSAT CZTI

Data Quality Report

Orbit 20180411_G08_036T01_9000002034_level2

Creation date: 2018-04-13T17:06:06.106900
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/AS1G08_036T01_9000002034cztM0_level2.evt modeM0/AS1G08_036T01_9000002034cztM0_level2_quad_clean.evt
Size (bytes)1,800,705,600316,990,080
Size1.7 GB 302.3 MB
Events in quadrant A12,030,8082,017,456
Events in quadrant B13,763,0332,097,516
Events in quadrant C12,301,2661,962,446
Events in quadrant D14,798,8621,850,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505620
B0561340
C0510600
D0589900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243241360.559119%
B243242651.089459%
C243241040.427561%
D243244351.788357%

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 30630 24330 0 0 0.00% 0.00%
B 30630 24330 18 18 0.06% 0.07%
C 30630 24330 2 2 0.01% 0.01%
D 30630 24330 271 271 0.88% 1.11%

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 1 162 28778 41.33 3119 3058 622.3
A 0 226 27718 39.63 3119 3058 622.3
A 12 194 23882 33.47 3119 3058 622.3
B 10 244 836349 1449.16 3122 3054 575.0
B 8 250 274683 472.38 3122 3054 575.0
B 0 219 158892 271.01 3122 3054 575.0
C 3 233 411831 589.64 3040 3061 693.3
C 4 254 30272 39.25 3040 3061 693.3
C 13 61 21806 27.04 3040 3061 693.3
D 5 222 2183506 2781.11 2989 2937 784.1
D 8 195 680791 864.54 2989 2937 784.1
D 10 157 243057 306.25 2989 2937 784.1

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