ASTROSAT CZTI

Data Quality Report

Orbit 20170307_G06_032T01_9000001074_level2

Creation date: 2017-09-23T08:49:28.867116
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_032T01_9000001074cztM0_level2.evt modeM0/AS1G06_032T01_9000001074cztM0_level2_quad_clean.evt
Size (bytes)7,011,429,1201,552,890,240
Size6.5 GB 1.4 GB
Events in quadrant A48,180,42010,028,702
Events in quadrant B52,212,91510,346,742
Events in quadrant C49,724,5949,939,792
Events in quadrant D55,022,7889,413,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710
B01730
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02174620
B02254980
C02222280
D02396140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021820
B021780
C021820
D021680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10664910470.981725%
B10664114421.352200%
C10660910510.985845%
D10658221712.036929%

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 125215 107239 30 30 0.02% 0.03%
B 125215 107215 212 212 0.17% 0.20%
C 125215 107223 224 224 0.18% 0.21%
D 125214 107181 1197 1197 0.96% 1.12%

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 13 14 173067 64.95 12391 12122 2477.9
A 15 174 126736 46.25 12391 12122 2477.9
A 15 239 124248 45.25 12391 12122 2477.9
B 4 239 911294 385.76 12570 12282 2330.5
B 11 51 487378 203.86 12570 12282 2330.5
B 0 219 453981 189.53 12570 12282 2330.5
C 4 254 1587802 564.11 12178 12239 2793.0
C 9 243 240452 81.71 12178 12239 2793.0
C 1 16 221222 74.82 12178 12239 2793.0
D 2 152 3604917 1237.34 12046 11683 2904.0
D 12 233 1580859 540.35 12046 11683 2904.0
D 13 137 922165 313.53 12046 11683 2904.0

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