ASTROSAT CZTI

Data Quality Report

Orbit 20190607_T03_036T01_9000002972_level2

Creation date: 2019-06-08T11:40:33.328895
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/AS1T03_036T01_9000002972cztM0_level2.evt modeM0/AS1T03_036T01_9000002972cztM0_level2_quad_clean.evt
Size (bytes)1,177,390,080185,607,360
Size1.1 GB 177.0 MB
Events in quadrant A8,870,9421,241,243
Events in quadrant B7,355,8351,264,619
Events in quadrant C8,888,1551,171,050
Events in quadrant D9,731,2831,112,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339750
B0297720
C0350800
D0371050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12034131710.943992%
B120344463.706166%
C120345984.969254%
D12034133011.052019%

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 15909 12034 900 900 5.66% 7.48%
B 15909 12034 137 137 0.86% 1.14%
C 15909 12034 156 156 0.98% 1.30%
D 15908 12033 1187 1187 7.46% 9.86%

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 2728743 8862.05 1552 1527 307.7
A 14 254 145559 468.03 1552 1527 307.7
A 11 29 15097 44.1 1552 1527 307.7
B 7 220 758216 2533.25 1600 1564 298.7
B 0 197 187181 621.44 1600 1564 298.7
B 0 190 36909 118.33 1600 1564 298.7
C 3 233 2152946 6191.03 1516 1533 347.5
C 10 222 481893 1382.31 1516 1533 347.5
C 14 238 238230 681.13 1516 1533 347.5
D 7 38 2323656 6296.66 1527 1487 368.8
D 12 218 821107 2222.44 1527 1487 368.8
D 12 233 340009 917.92 1527 1487 368.8

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