ASTROSAT CZTI

Data Quality Report

Orbit 20170604_A03_105T01_9000001268_level2

Creation date: 2017-09-24T02:45:54.678803
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/AS1A03_105T01_9000001268cztM0_level2.evt modeM0/AS1A03_105T01_9000001268cztM0_level2_quad_clean.evt
Size (bytes)6,272,288,6401,087,251,840
Size5.8 GB 1.0 GB
Events in quadrant A51,204,9856,750,674
Events in quadrant B44,018,3406,828,469
Events in quadrant C41,600,6616,667,456
Events in quadrant D47,047,0226,501,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02090230
B01885940
C01860820
D02014150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018480
B018460
C018400
D018440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9019218712.074463%
B9019915211.686271%
C902229861.092860%
D9013619332.144537%

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 103941 90669 350 350 0.34% 0.39%
B 103941 90647 52 52 0.05% 0.06%
C 103941 90672 61 61 0.06% 0.07%
D 103941 90641 848 848 0.82% 0.94%

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 6564212 2987.07 10951 10742 2193.9
A 1 162 697294 312.93 10951 10742 2193.9
A 4 2 521989 233.03 10951 10742 2193.9
B 0 214 990501 466.55 10995 10749 2100.0
B 12 111 239363 108.86 10995 10749 2100.0
B 11 111 193547 87.05 10995 10749 2100.0
C 14 234 215356 83.74 10597 10647 2444.6
C 13 61 79226 28.05 10597 10647 2444.6
C 12 4 45627 14.31 10597 10647 2444.6
D 1 52 3109294 1180.35 10548 10282 2625.5
D 12 233 1375237 519.89 10548 10282 2625.5
D 2 14 1194069 450.88 10548 10282 2625.5

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