ASTROSAT CZTI

Data Quality Report

Orbit 20181113_T03_030T01_9000002512_level2

Creation date: 2018-11-15T18:40:23.905830
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/AS1T03_030T01_9000002512cztM0_level2_bc.evt modeM0/AS1T03_030T01_9000002512cztM0_level2_quad_clean.evt
Size (bytes)4,028,232,9601,034,458,560
Size3.8 GB 986.5 MB
Events in quadrant A47,941,1366,072,017
Events in quadrant B19,899,0016,856,692
Events in quadrant C18,003,7376,535,931
Events in quadrant D30,456,0736,131,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017060
B017060
C017060
D017060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03266800
B01829670
C01768550
D02266370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A835731932623.124693%
B8357318262.184916%
C8357413821.653624%
D8357455556.646804%

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 95464 83561 263 263 0.28% 0.31%
B 95464 83575 41 41 0.04% 0.05%
C 95465 83577 0 0 0.00% 0.00%
D 95464 83561 605 605 0.63% 0.72%

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 32315109 37672.7 3970 3906 857.7
A 12 189 215350 246.53 3970 3906 857.7
A 0 23 107301 120.55 3970 3906 857.7
B 3 64 1224537 1489.7 4409 4304 819.1
B 15 35 696423 844.96 4409 4304 819.1
B 4 216 243440 291.94 4409 4304 819.1
C 3 233 1814633 1867.39 4185 4157 969.5
C 5 112 36574 33.44 4185 4157 969.5
C 13 61 24597 21.08 4185 4157 969.5
D 1 52 12612393 13179.81 4162 4017 956.6
D 2 152 705620 733.4 4162 4017 956.6
D 12 235 429500 444.77 4162 4017 956.6

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