ASTROSAT CZTI

Data Quality Report

Orbit 20160302_T01_040T01_9000000354_level2

Creation date: 2017-10-26T23:39:39.827341
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/AS1T01_040T01_9000000354cztM0_level2.evt modeM0/AS1T01_040T01_9000000354cztM0_level2_quad_clean.evt
Size (bytes)1,973,468,160306,190,080
Size1.8 GB 292.0 MB
Events in quadrant A10,179,6311,988,672
Events in quadrant B23,566,3671,935,059
Events in quadrant C14,245,1891,929,134
Events in quadrant D10,292,6011,905,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455860
B0855760
C0571380
D0466120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A220164291.948583%
B22016326514.830124%
C220168383.806323%
D220163721.689680%

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 28030 22016 3 3 0.01% 0.01%
B 28030 22015 2382 2382 8.50% 10.82%
C 28030 22016 315 315 1.12% 1.43%
D 28030 22015 26 26 0.09% 0.12%

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 12 133 33415 58.94 2630 2576 523.2
A 0 226 31244 54.79 2630 2576 523.2
A 0 149 30285 52.96 2630 2576 523.2
B 0 85 12805275 27051.53 2579 2521 473.3
B 4 48 676097 1423.23 2579 2521 473.3
B 8 3 77772 159.0 2579 2521 473.3
C 14 223 2306788 4043.58 2519 2534 569.9
C 5 234 2019719 3539.82 2519 2534 569.9
C 10 82 32986 53.44 2519 2534 569.9
D 8 195 383578 648.59 2524 2464 587.6
D 13 169 153153 256.45 2524 2464 587.6
D 2 31 65044 106.5 2524 2464 587.6

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