ASTROSAT CZTI

Data Quality Report

Orbit 20170501_A03_036T01_9000001204_level2

Creation date: 2017-09-23T20:38:09.537054
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_036T01_9000001204cztM0_level2.evt modeM0/AS1A03_036T01_9000001204cztM0_level2_quad_clean.evt
Size (bytes)3,891,556,800781,632,000
Size3.6 GB 745.4 MB
Events in quadrant A26,653,8494,970,714
Events in quadrant B31,320,7095,049,398
Events in quadrant C25,681,2474,963,088
Events in quadrant D30,270,8364,701,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01206460
B01320090
C01188210
D01322150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581587921.361807%
B5816317082.936575%
C581744740.814797%
D5817715762.708974%

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 66045 58209 55 55 0.08% 0.09%
B 66045 58211 705 705 1.07% 1.21%
C 66045 58216 0 0 0.00% 0.00%
D 66045 58210 758 758 1.15% 1.30%

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 411829 304.33 6629 6474 1331.9
A 15 174 197650 143.53 6629 6474 1331.9
A 15 63 184741 133.84 6629 6474 1331.9
B 10 16 2615325 2092.01 6681 6528 1247.0
B 0 214 938136 747.06 6681 6528 1247.0
B 10 246 541386 428.91 6681 6528 1247.0
C 14 64 217291 141.42 6508 6525 1490.3
C 13 61 49269 28.68 6508 6525 1490.3
C 8 222 38565 21.5 6508 6525 1490.3
D 10 253 1700599 998.23 6360 6229 1697.4
D 2 136 962292 563.26 6360 6229 1697.4
D 13 137 739913 432.25 6360 6229 1697.4

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