ASTROSAT CZTI

Data Quality Report

Orbit 20161217_G06_134T03_9000000894_level2

Creation date: 2017-09-22T13:01:44.992093
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/AS1G06_134T03_9000000894cztM0_level2.evt modeM0/AS1G06_134T03_9000000894cztM0_level2_quad_clean.evt
Size (bytes)1,945,281,600289,918,080
Size1.8 GB 276.5 MB
Events in quadrant A12,459,7081,815,822
Events in quadrant B12,574,0721,834,694
Events in quadrant C10,574,5251,817,596
Events in quadrant D21,684,1241,657,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04880
B04880
C04880
D04880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537060
B0536050
C0488560
D0812010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240612290.951748%
B240624321.795362%
C24062620.257668%
D2406112865.344749%

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 28522 24067 68 68 0.24% 0.28%
B 28523 24068 179 179 0.63% 0.74%
C 28523 24068 4 4 0.01% 0.02%
D 28523 24067 1162 1162 4.07% 4.83%

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 8 15 1505016 2695.45 2754 2697 557.4
A 13 248 225358 399.5 2754 2697 557.4
A 14 111 67379 116.05 2754 2697 557.4
B 0 219 873298 1666.7 2784 2720 522.3
B 4 170 171164 322.48 2784 2720 522.3
B 4 80 169467 319.23 2784 2720 522.3
C 9 54 28472 41.59 2684 2695 619.7
C 13 61 21478 30.31 2684 2695 619.7
C 7 255 20656 28.98 2684 2695 619.7
D 8 195 6740071 10510.07 2626 2542 641.1
D 12 221 2145969 3343.59 2626 2542 641.1
D 2 33 1133593 1764.36 2626 2542 641.1

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