ASTROSAT CZTI

Data Quality Report

Orbit 20160323_T01_046T01_9000000396_level2

Creation date: 2017-10-17T16:36:08.734688
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/AS1T01_046T01_9000000396cztM0_level2.evt modeM0/AS1T01_046T01_9000000396cztM0_level2_quad_clean.evt
Size (bytes)5,102,259,840987,125,760
Size4.8 GB 941.4 MB
Events in quadrant A33,223,8246,117,786
Events in quadrant B34,460,0406,303,476
Events in quadrant C42,394,0526,262,961
Events in quadrant D39,322,7616,013,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015460
B015500
C015380
D015370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550600
B01565870
C01795090
D01737710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A758899121.201755%
B758749241.217808%
C7584518262.407542%
D7583515612.058416%

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 114543 76276 0 0 0.00% 0.00%
B 114543 76247 15 15 0.01% 0.02%
C 114543 76209 714 714 0.62% 0.94%
D 114543 76217 757 757 0.66% 0.99%

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 100988 53.19 8584 8370 1741.4
A 12 194 94980 49.74 8584 8370 1741.4
A 0 226 91141 47.53 8584 8370 1741.4
B 6 36 181941 105.32 8752 8523 1646.5
B 10 244 164601 94.79 8752 8523 1646.5
B 0 189 133068 75.64 8752 8523 1646.5
C 9 70 8757702 4543.95 8382 8404 1925.5
C 14 223 369929 187.76 8382 8404 1925.5
C 12 4 238210 119.35 8382 8404 1925.5
D 2 184 2125572 1078.15 8275 8070 1964.0
D 2 248 1308764 662.26 8275 8070 1964.0
D 12 79 1163027 588.06 8275 8070 1964.0

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