ASTROSAT CZTI

Data Quality Report

Orbit 20171105_A04_022T04_9000001666_level2

Creation date: 2018-01-08T17:28:19.480716
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_022T04_9000001666cztM0_level2_bc.evt modeM0/AS1A04_022T04_9000001666cztM0_level2_quad_clean.evt
Size (bytes)2,556,092,160824,304,960
Size2.4 GB 786.1 MB
Events in quadrant A16,248,7115,124,864
Events in quadrant B20,479,0055,046,779
Events in quadrant C12,569,2665,547,348
Events in quadrant D23,874,6524,980,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01458130
B01635540
C01279990
D01763590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012660
B012660
C012660
D012660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6220917192.763266%
B6220938886.249900%
C622094450.715331%
D6220945167.259400%

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 70105 62214 51 51 0.07% 0.08%
B 70105 62209 19 19 0.03% 0.03%
C 70105 62210 6 6 0.01% 0.01%
D 70105 62188 590 590 0.84% 0.95%

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 3253146 4841.93 3073 3012 671.2
A 13 251 527137 780.82 3073 3012 671.2
A 13 248 258692 380.9 3073 3012 671.2
B 4 239 7715487 13293.34 3045 2958 580.2
B 15 204 283509 483.56 3045 2958 580.2
B 3 189 200755 340.92 3045 2958 580.2
C 0 207 108815 141.25 3176 3112 748.3
C 13 61 18324 20.33 3176 3112 748.3
C 8 128 15112 16.04 3176 3112 748.3
D 1 52 4247733 5983.14 3018 2905 709.5
D 10 253 3398595 4786.27 3018 2905 709.5
D 13 152 1041788 1464.32 3018 2905 709.5

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