ASTROSAT CZTI

Data Quality Report

Orbit 20151112_P01_141T01_9000000096_level2

Creation date: 2020-10-16T19:00:10.261537
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/AS1P01_141T01_9000000096cztM0_level2_bc.evt modeM0/AS1P01_141T01_9000000096cztM0_level2_quad_clean.evt
Size (bytes)2,333,001,600823,973,760
Size2.2 GB 785.8 MB
Events in quadrant A13,409,5265,214,726
Events in quadrant B16,217,0445,317,347
Events in quadrant C13,093,3845,066,681
Events in quadrant D23,502,7934,899,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03108260
B03161530
C02820170
D03152630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07190
B07190
C07190
D07190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A705879161.297689%
B7042110301.462632%
C6721910211.518916%
D6997927823.975478%

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 85624 70591 10 10 0.01% 0.01%
B 85624 70423 49 49 0.06% 0.07%
C 85624 67221 53 53 0.06% 0.08%
D 85624 69983 403 403 0.47% 0.58%

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 14 79 140473 199.83 3225 3167 687.1
A 12 236 133955 190.34 3225 3167 687.1
A 0 238 117105 165.82 3225 3167 687.1
B 7 221 1334113 2153.07 3295 3221 618.1
B 0 220 796066 1282.64 3295 3221 618.1
B 5 191 289316 462.83 3295 3221 618.1
C 9 52 772001 1197.54 3044 3003 642.1
C 15 241 169928 259.95 3044 3003 642.1
C 2 192 83750 125.74 3044 3003 642.1
D 12 237 5832924 8399.96 3082 3013 694.0
D 1 4 1472693 2117.57 3082 3013 694.0
D 13 221 513770 735.92 3082 3013 694.0

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