ASTROSAT CZTI

Data Quality Report

Orbit 20161027_G06_033T01_9000000760_level2

Creation date: 2017-09-18T20:45:57.132280
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/AS1G06_033T01_9000000760cztM0_level2.evt modeM0/AS1G06_033T01_9000000760cztM0_level2_quad_clean.evt
Size (bytes)6,383,007,3601,050,537,600
Size5.9 GB 1001.9 MB
Events in quadrant A41,939,9296,487,887
Events in quadrant B43,936,0926,558,483
Events in quadrant C41,239,4676,519,636
Events in quadrant D60,069,8896,029,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01871470
B01901100
C01863380
D02397430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018460
B018380
C018460
D018460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01290
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9081611181.231061%
B9079912701.398694%
C908146120.673905%
D9067645004.962724%

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 104218 91196 27 27 0.03% 0.03%
B 104218 91184 39 39 0.04% 0.04%
C 104218 91198 1 1 0.00% 0.00%
D 104218 91145 3115 3115 2.99% 3.42%

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 15 234 134627 56.92 10799 10587 2179.3
A 15 236 128873 54.28 10799 10587 2179.3
A 0 226 105220 43.42 10799 10587 2179.3
B 15 204 667090 318.48 10901 10669 2061.1
B 0 219 262901 122.38 10901 10669 2061.1
B 0 214 253520 117.82 10901 10669 2061.1
C 1 241 133414 50.59 10489 10564 2428.3
C 13 61 85786 30.98 10489 10564 2428.3
C 8 128 55093 18.34 10489 10564 2428.3
D 1 20 7453513 2971.23 10247 9956 2505.2
D 2 152 6229656 2482.71 10247 9956 2505.2
D 2 136 1462664 579.88 10247 9956 2505.2

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