ASTROSAT CZTI

Data Quality Report

Orbit 20190204_A05_082T08_9000002698_level2

Creation date: 2019-02-05T17:21:09.382716
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_082T08_9000002698cztM0_level2_bc.evt modeM0/AS1A05_082T08_9000002698cztM0_level2_quad_clean.evt
Size (bytes)1,530,097,920483,361,920
Size1.4 GB 461.0 MB
Events in quadrant A8,997,2753,020,345
Events in quadrant B9,258,3963,060,012
Events in quadrant C8,344,4692,950,040
Events in quadrant D16,990,9132,843,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0857310
B0867520
C0841190
D01136950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08220
B08220
C08220
D08220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A402854151.030160%
B402834491.114614%
C402794831.199136%
D4028021345.297915%

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 46161 40298 7 7 0.02% 0.02%
B 46161 40297 12 12 0.03% 0.03%
C 46161 40296 2 2 0.00% 0.00%
D 46161 40296 487 487 1.06% 1.21%

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 728321 1585.12 2125 2085 458.2
A 4 2 74424 157.89 2125 2085 458.2
A 15 9 18090 34.93 2125 2085 458.2
B 4 171 301576 740.33 2136 2082 404.5
B 7 220 189150 462.42 2136 2082 404.5
B 5 143 186114 454.91 2136 2082 404.5
C 3 233 255144 529.88 2038 2023 477.7
C 0 207 220998 458.4 2038 2023 477.7
C 9 160 17876 33.19 2038 2023 477.7
D 7 238 3293721 6841.66 2056 1981 481.1
D 11 176 2125869 4414.36 2056 1981 481.1
D 12 110 1820080 3778.79 2056 1981 481.1

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