ASTROSAT CZTI

Data Quality Report

Orbit 20190827_C04_001T01_9000003126_level2

Creation date: 2019-08-29T12:52:41.871321
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/AS1C04_001T01_9000003126cztM0_level2_bc.evt modeM0/AS1C04_001T01_9000003126cztM0_level2_quad_clean.evt
Size (bytes)3,459,340,8001,421,017,920
Size3.2 GB 1.3 GB
Events in quadrant A16,966,1279,782,775
Events in quadrant B18,092,1819,936,156
Events in quadrant C15,245,7959,633,871
Events in quadrant D49,338,8598,529,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01605190
B01626770
C01559430
D02819670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015320
B015320
C015320
D015320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7526110751.428363%
B752618191.088213%
C752619191.221084%
D752611224116.264732%

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 87356 75260 62 62 0.07% 0.08%
B 87356 75261 8 8 0.01% 0.01%
C 87356 75259 0 0 0.00% 0.00%
D 87356 75251 2821 2821 3.23% 3.75%

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 16 1654942 1909.85 3936 3871 864.5
A 13 254 104413 116.3 3936 3871 864.5
A 8 6 36802 38.09 3936 3871 864.5
B 0 189 626560 831.83 3988 3898 748.5
B 0 229 324873 428.8 3988 3898 748.5
B 0 190 286267 377.23 3988 3898 748.5
C 3 233 296214 319.07 3842 3825 916.4
C 0 10 99805 104.74 3842 3825 916.4
C 13 61 22287 20.15 3842 3825 916.4
D 1 239 15713909 18647.26 3605 3489 842.5
D 1 20 9684274 11490.47 3605 3489 842.5
D 1 52 3617353 4289.43 3605 3489 842.5

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