ASTROSAT CZTI

Data Quality Report

Orbit 20190612_A05_180T01_9000002986_level2

Creation date: 2019-06-14T17:15:28.901207
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/AS1A05_180T01_9000002986cztM0_level2_bc.evt modeM0/AS1A05_180T01_9000002986cztM0_level2_quad_clean.evt
Size (bytes)3,289,867,2001,318,610,880
Size3.1 GB 1.2 GB
Events in quadrant A22,242,3688,734,614
Events in quadrant B21,772,8518,695,817
Events in quadrant C19,978,4768,344,340
Events in quadrant D29,641,3718,129,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017980
B017980
C017980
D017980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01947510
B01921420
C01885840
D02208320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8807516631.888163%
B8807514761.675844%
C8807515981.814363%
D8807533483.801306%

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 104325 88081 19 19 0.02% 0.02%
B 104325 88079 23 23 0.02% 0.03%
C 104325 88080 1 1 0.00% 0.00%
D 104325 88079 518 518 0.50% 0.59%

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 14 238 771091 645.76 5350 5272 1185.9
A 5 16 475939 396.88 5350 5272 1185.9
A 14 254 228973 188.63 5350 5272 1185.9
B 0 198 230174 219.3 5339 5264 1025.6
B 4 80 202514 192.33 5339 5264 1025.6
B 0 189 183592 173.88 5339 5264 1025.6
C 7 220 136677 109.92 5088 5111 1196.9
C 3 233 107708 85.72 5088 5111 1196.9
C 4 254 103164 81.92 5088 5111 1196.9
D 1 52 6364732 5168.88 5201 5037 1230.4
D 7 38 1568347 1270.59 5201 5037 1230.4
D 12 218 567265 456.95 5201 5037 1230.4

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