ASTROSAT CZTI

Data Quality Report

Orbit 20190220_A06_006T01_9000002724_level2

Creation date: 2019-02-22T10:47:22.637364
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/AS1A06_006T01_9000002724cztM0_level2_bc.evt modeM0/AS1A06_006T01_9000002724cztM0_level2_quad_clean.evt
Size (bytes)3,893,431,6801,314,910,080
Size3.6 GB 1.2 GB
Events in quadrant A22,577,5358,301,183
Events in quadrant B25,459,4558,371,272
Events in quadrant C25,282,1758,159,628
Events in quadrant D37,523,5297,880,174

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02183460
B02279020
C02295530
D02661360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021080
B021080
C021080
D021080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690
B01690
C01690
D01690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10385314781.423165%
B10385320201.945057%
C10385326662.567090%
D10385342334.075954%

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 120283 103856 40 40 0.03% 0.04%
B 120283 103853 58 58 0.05% 0.06%
C 120283 103855 213 213 0.18% 0.21%
D 120283 103855 1090 1090 0.91% 1.05%

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 15 174 787811 657.04 5502 5402 1190.8
A 4 2 420752 348.79 5502 5402 1190.8
A 8 34 107275 85.55 5502 5402 1190.8
B 10 245 1087006 1035.96 5571 5431 1044.0
B 3 64 1067801 1017.57 5571 5431 1044.0
B 0 189 352799 332.72 5571 5431 1044.0
C 0 207 3570443 2865.88 5344 5325 1244.0
C 3 233 1084605 867.6 5344 5325 1244.0
C 8 128 55957 40.7 5344 5325 1244.0
D 1 52 9749269 7811.22 5398 5207 1247.4
D 7 238 2567134 2053.74 5398 5207 1247.4
D 14 34 777521 619.12 5398 5207 1247.4

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