ASTROSAT CZTI

Data Quality Report

Orbit 20160826_G05_021T01_9000000624_level2

Creation date: 2017-10-31T15:06:06.274126
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/AS1G05_021T01_9000000624cztM0_level2.evt modeM0/AS1G05_021T01_9000000624cztM0_level2_quad_clean.evt
Size (bytes)5,352,825,600886,674,240
Size5.0 GB 845.6 MB
Events in quadrant A47,942,5295,295,757
Events in quadrant B25,241,0926,326,109
Events in quadrant C52,316,9645,745,307
Events in quadrant D33,132,0135,931,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780600
B01099230
C01919980
D01346640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011420
B011420
C011420
D011420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514571093321.246866%
B514576351.234040%
C51457921817.913986%
D5145720754.032493%

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 70581 51462 9734 9734 13.79% 18.91%
B 70580 51462 113 113 0.16% 0.22%
C 70581 51464 8811 8811 12.48% 17.12%
D 70581 51464 1657 1657 2.35% 3.22%

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 0 31 27496029 26571.1 5137 5026 1034.6
A 0 50 440122 420.54 5137 5026 1034.6
A 13 251 124605 115.58 5137 5026 1034.6
B 15 204 777217 692.7 5987 5854 1113.6
B 0 219 381044 336.93 5987 5854 1113.6
B 10 16 261800 229.84 5987 5854 1113.6
C 9 247 30860563 25068.16 5413 5427 1230.8
C 1 16 248724 197.67 5413 5427 1230.8
C 13 61 44390 31.66 5413 5427 1230.8
D 2 33 4863928 3548.48 5694 5525 1369.2
D 12 22 944811 686.03 5694 5525 1369.2
D 2 136 927568 673.44 5694 5525 1369.2

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