ASTROSAT CZTI

Data Quality Report

Orbit 20171118_A04_137T01_9000001700_level2

Creation date: 2018-01-09T05:37:27.706521
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_137T01_9000001700cztM0_level2_bc.evt modeM0/AS1A04_137T01_9000001700cztM0_level2_quad_clean.evt
Size (bytes)2,049,903,360559,736,640
Size1.9 GB 533.8 MB
Events in quadrant A17,606,7363,514,937
Events in quadrant B17,917,3163,445,498
Events in quadrant C8,615,5133,692,122
Events in quadrant D15,101,8843,437,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01277050
B01266630
C0862500
D01091850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08500
B08500
C08500
D08500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4168231337.516434%
B41682429010.292212%
C416823990.957248%
D4168222065.292452%

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 50308 41681 105 105 0.21% 0.25%
B 50308 41683 291 291 0.58% 0.70%
C 50308 41685 0 0 0.00% 0.00%
D 50308 41684 425 425 0.84% 1.02%

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 5 8365135 17973.46 2164 2125 465.3
A 9 143 344550 735.93 2164 2125 465.3
A 1 162 214970 457.44 2164 2125 465.3
B 4 239 4435435 11070.39 2152 2102 400.5
B 3 64 2602257 6492.8 2152 2102 400.5
B 15 255 1262436 3147.16 2152 2102 400.5
C 9 54 22655 43.1 2183 2158 475.6
C 12 4 20606 38.79 2183 2158 475.6
C 14 234 18735 34.85 2183 2158 475.6
D 10 253 1930057 3900.48 2164 2090 494.3
D 2 33 1488930 3008.04 2164 2090 494.3
D 1 52 954163 1926.15 2164 2090 494.3

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