ASTROSAT CZTI

Data Quality Report

Orbit 20161202_G06_164T01_9000000844_level2

Creation date: 2017-09-19T08:29:54.809143
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_164T01_9000000844cztM0_level2.evt modeM0/AS1G06_164T01_9000000844cztM0_level2_quad_clean.evt
Size (bytes)2,812,723,200590,696,640
Size2.6 GB 563.3 MB
Events in quadrant A23,109,6063,849,165
Events in quadrant B21,389,3083,849,669
Events in quadrant C17,745,1423,787,647
Events in quadrant D20,270,3863,689,864

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08080
B08080
C08080
D08080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0948500
B0897400
C0809820
D0871640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3954612303.110302%
B3954610612.682951%
C395464031.019066%
D395466221.572852%

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 47926 39553 371 371 0.77% 0.94%
B 47926 39554 391 391 0.82% 0.99%
C 47926 39554 13 13 0.03% 0.03%
D 47926 39554 164 164 0.34% 0.41%

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 15 4788039 5228.43 4613 4524 914.9
A 15 174 374033 403.88 4613 4524 914.9
A 15 236 70416 72.02 4613 4524 914.9
B 0 228 1638194 1905.98 4621 4514 857.1
B 0 219 532974 616.54 4621 4514 857.1
B 0 229 365455 421.1 4621 4514 857.1
C 4 254 168306 162.28 4449 4459 1009.6
C 9 54 95171 89.85 4449 4459 1009.6
C 1 241 57061 52.1 4449 4459 1009.6
D 2 152 801716 736.26 4492 4355 1083.0
D 12 221 770684 707.6 4492 4355 1083.0
D 5 97 517613 473.92 4492 4355 1083.0

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