ASTROSAT CZTI

Data Quality Report

Orbit 20171129_A04_113T03_9000001738_level2

Creation date: 2018-01-09T07:29:35.019458
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_113T03_9000001738cztM0_level2_bc.evt modeM0/AS1A04_113T03_9000001738cztM0_level2_quad_clean.evt
Size (bytes)3,062,059,200794,828,160
Size2.9 GB 758.0 MB
Events in quadrant A18,130,8425,025,885
Events in quadrant B23,053,0454,943,248
Events in quadrant C12,901,8525,103,078
Events in quadrant D34,291,9754,608,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013040
B013040
C013040
D013040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560720
B01733300
C01321230
D02082310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402313332.082064%
B6402339616.186839%
C640235630.879371%
D6402364029.999531%

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 73618 64025 2 2 0.00% 0.00%
B 73618 64025 114 114 0.15% 0.18%
C 73618 64025 0 0 0.00% 0.00%
D 73618 64024 956 956 1.30% 1.49%

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 3824723 5230.8 3319 3257 730.6
A 1 162 672009 915.38 3319 3257 730.6
A 6 16 278502 376.75 3319 3257 730.6
B 4 239 5204992 8334.21 3297 3217 624.1
B 3 64 2097545 3355.5 3297 3217 624.1
B 15 204 1389404 2220.93 3297 3217 624.1
C 12 4 24682 29.86 3285 3245 718.0
C 14 234 23737 28.54 3285 3245 718.0
C 13 61 20191 23.6 3285 3245 718.0
D 1 52 11278720 15187.37 3147 3030 742.4
D 8 195 4656087 6267.26 3147 3030 742.4
D 12 221 2791255 3755.5 3147 3030 742.4

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