ASTROSAT CZTI

Data Quality Report

Orbit 20170605_G07_046T01_9000001274_level2

Creation date: 2017-09-24T03:04:41.231641
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/AS1G07_046T01_9000001274cztM0_level2.evt modeM0/AS1G07_046T01_9000001274cztM0_level2_quad_clean.evt
Size (bytes)3,396,744,000565,678,080
Size3.2 GB 539.5 MB
Events in quadrant A29,571,4973,472,894
Events in quadrant B23,664,4893,550,220
Events in quadrant C22,719,3233,431,227
Events in quadrant D23,660,1023,368,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09820
B09860
C09860
D09820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01181810
B01007430
C01004990
D01035440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4811612492.595810%
B482719331.932838%
C482745891.220118%
D482707611.576549%

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 56153 48566 279 279 0.50% 0.57%
B 56153 48645 8 8 0.01% 0.02%
C 56153 48643 8 8 0.01% 0.02%
D 56153 48633 150 150 0.27% 0.31%

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 8 5 4156214 3504.94 5920 5811 1184.2
A 15 236 683087 571.95 5920 5811 1184.2
A 15 223 498542 416.1 5920 5811 1184.2
B 0 214 461586 402.81 5957 5812 1131.5
B 12 111 130418 110.13 5957 5812 1131.5
B 11 111 105912 88.47 5957 5812 1131.5
C 9 68 206804 151.07 5731 5758 1330.8
C 14 234 108950 77.54 5731 5758 1330.8
C 13 61 43271 28.19 5731 5758 1330.8
D 1 52 1128672 803.87 5761 5624 1397.1
D 2 14 213304 148.66 5761 5624 1397.1
D 7 71 193669 134.6 5761 5624 1397.1

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