ASTROSAT CZTI

Data Quality Report

Orbit 20170820_A03_069T03_9000001478_level2

Creation date: 2017-09-24T16:16:54.303724
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_069T03_9000001478cztM0_level2.evt modeM0/AS1A03_069T03_9000001478cztM0_level2_quad_clean.evt
Size (bytes)956,350,080151,355,520
Size912.0 MB 144.3 MB
Events in quadrant A6,425,626936,223
Events in quadrant B7,139,352936,060
Events in quadrant C6,169,180914,936
Events in quadrant D8,328,283876,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277710
B0296040
C0274050
D0333880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133162271.704716%
B133133032.275971%
C133121361.021635%
D133172641.982428%

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 15261 13322 3 3 0.02% 0.02%
B 15261 13322 32 32 0.21% 0.24%
C 15261 13322 0 0 0.00% 0.00%
D 15261 13322 69 69 0.45% 0.52%

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 81440 244.42 1629 1595 326.7
A 15 174 39815 117.0 1629 1595 326.7
A 3 1 29378 85.05 1629 1595 326.7
B 11 51 337226 1093.34 1621 1582 307.0
B 4 239 150946 486.55 1621 1582 307.0
B 10 247 115318 370.49 1621 1582 307.0
C 0 207 25933 67.57 1572 1583 360.4
C 13 61 11811 28.38 1572 1583 360.4
C 14 67 10024 23.42 1572 1583 360.4
D 8 195 1480137 3969.65 1566 1525 372.5
D 1 52 309485 826.78 1566 1525 372.5
D 7 71 183459 488.44 1566 1525 372.5

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