ASTROSAT CZTI

Data Quality Report

Orbit 20180424_A04_012T02_9000002050_level2

Creation date: 2018-04-26T10:58:33.251008
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/AS1A04_012T02_9000002050cztM0_level2_bc.evt modeM0/AS1A04_012T02_9000002050cztM0_level2_quad_clean.evt
Size (bytes)1,828,028,160567,786,240
Size1.7 GB 541.5 MB
Events in quadrant A10,975,7923,517,445
Events in quadrant B9,818,0343,583,306
Events in quadrant C9,942,5013,555,067
Events in quadrant D21,430,0683,323,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01027630
B0986600
C0969580
D01390700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09480
B09480
C09480
D09480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A468869532.032590%
B468867431.584695%
C468864100.874461%
D4688628166.006057%

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 52872 46886 20 20 0.04% 0.04%
B 52872 46884 5 5 0.01% 0.01%
C 52872 46885 0 0 0.00% 0.00%
D 52872 46884 238 238 0.45% 0.51%

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 9 143 1649707 3179.26 2356 2300 518.2
A 8 15 170431 324.47 2356 2300 518.2
A 1 162 68790 128.32 2356 2300 518.2
B 10 244 140829 307.7 2386 2323 450.1
B 4 142 114348 248.87 2386 2323 450.1
B 4 80 101674 220.72 2386 2323 450.1
C 3 233 754587 1434.45 2348 2308 524.4
C 13 61 13984 22.26 2348 2308 524.4
C 12 4 8343 11.51 2348 2308 524.4
D 13 122 8520139 15954.74 2271 2202 533.9
D 1 52 2166301 4053.52 2271 2202 533.9
D 5 222 765072 1428.91 2271 2202 533.9

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