ASTROSAT CZTI

Data Quality Report

Orbit 20190812_A05_025T17_9000003084_level2

Creation date: 2019-08-13T16:22:43.921284
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/AS1A05_025T17_9000003084cztM0_level2_bc.evt modeM0/AS1A05_025T17_9000003084cztM0_level2_quad_clean.evt
Size (bytes)1,246,752,000636,880,320
Size1.2 GB 607.4 MB
Events in quadrant A7,611,0914,252,793
Events in quadrant B9,050,0824,288,136
Events in quadrant C7,692,5264,255,816
Events in quadrant D11,027,7354,104,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07060
B07060
C07060
D07060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0718380
B0773860
C0730230
D0824260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A348204321.240666%
B348206731.932797%
C348206781.947157%
D348208532.449742%

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 41139 34820 0 0 0.00% 0.00%
B 41139 34821 9 9 0.02% 0.03%
C 41139 34819 0 0 0.00% 0.00%
D 41139 34819 23 23 0.06% 0.07%

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 15 174 30227 66.8 1977 1954 423.2
A 0 226 13093 26.32 1977 1954 423.2
A 12 194 12718 25.43 1977 1954 423.2
B 7 220 452076 1230.04 1994 1955 365.9
B 0 229 304894 827.84 1994 1955 365.9
B 0 190 159255 429.85 1994 1955 365.9
C 10 91 167418 362.03 1949 1951 457.1
C 7 247 31517 64.69 1949 1951 457.1
C 13 61 11383 20.64 1949 1951 457.1
D 1 52 1363353 2989.32 1973 1914 455.4
D 1 20 741360 1623.61 1973 1914 455.4
D 9 1 670973 1469.06 1973 1914 455.4

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