ASTROSAT CZTI

Data Quality Report

Orbit 20171004_A04_109T01_9000001578_level2

Creation date: 2017-10-18T18:57:08.435137
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_109T01_9000001578cztM0_level2.evt modeM0/AS1A04_109T01_9000001578cztM0_level2_quad_clean.evt
Size (bytes)4,048,562,880689,829,120
Size3.8 GB 657.9 MB
Events in quadrant A36,621,5554,248,246
Events in quadrant B31,951,1164,414,185
Events in quadrant C22,917,6964,472,531
Events in quadrant D27,657,3064,231,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010460
B010460
C010480
D010480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01432600
B01288710
C01047920
D01177250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5139433316.481301%
B5140122464.369565%
C513922610.507861%
D513968411.636314%

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 57336 51424 2153 2153 3.76% 4.19%
B 57336 51424 1147 1147 2.00% 2.23%
C 57336 51424 0 0 0.00% 0.00%
D 57336 51423 483 483 0.84% 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 6048362 5134.04 5873 5746 1177.0
A 13 251 4803294 4076.18 5873 5746 1177.0
A 15 223 1444848 1222.72 5873 5746 1177.0
B 4 239 7737314 6830.44 5991 5833 1131.9
B 0 214 319134 276.79 5991 5833 1131.9
B 0 219 142428 120.68 5991 5833 1131.9
C 13 61 43696 27.9 5865 5894 1354.7
C 8 222 32986 20.0 5865 5894 1354.7
C 0 207 21688 11.66 5865 5894 1354.7
D 1 52 2914794 2073.82 5823 5645 1402.8
D 5 222 636342 449.6 5823 5645 1402.8
D 8 195 501134 353.21 5823 5645 1402.8

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