ASTROSAT CZTI

Data Quality Report

Orbit 20180301_A04_017T01_9000001932_level2

Creation date: 2018-08-01T11:47:30.149383
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_017T01_9000001932cztM0_level2_bc.evt modeM0/AS1A04_017T01_9000001932cztM0_level2_quad_clean.evt
Size (bytes)3,021,004,800484,104,960
Size2.8 GB 461.7 MB
Events in quadrant A15,571,7182,851,754
Events in quadrant B23,562,4542,436,732
Events in quadrant C10,923,2703,070,344
Events in quadrant D37,675,3652,518,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011220
B011220
C011220
D011220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480720
B01812680
C01131470
D02243230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5504252839.598125%
B550421089719.797609%
C550425500.999237%
D550421491927.104756%

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 68204 55013 119 119 0.17% 0.22%
B 68204 54819 527 527 0.77% 0.96%
C 68204 55045 0 0 0.00% 0.00%
D 68204 55010 3249 3249 4.76% 5.91%

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 15 223 2399864 4213.63 2643 2585 568.9
A 15 239 1016625 1782.35 2643 2585 568.9
A 12 189 874973 1533.37 2643 2585 568.9
B 4 239 9701526 20533.76 2502 2434 472.3
B 0 85 2703416 5718.2 2502 2434 472.3
B 3 64 1020202 2154.7 2502 2434 472.3
C 0 207 62701 98.14 2761 2719 611.2
C 12 4 24600 35.8 2761 2719 611.2
C 13 61 16445 22.46 2761 2719 611.2
D 13 122 22001743 40569.87 2333 2248 542.3
D 10 157 3307631 6095.55 2333 2248 542.3
D 1 52 2756161 5078.57 2333 2248 542.3

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