ASTROSAT CZTI

Data Quality Report

Orbit 20190528_C04_009T06_9000002960_level2

Creation date: 2019-06-01T12:22:36.319719
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/AS1C04_009T06_9000002960cztM0_level2_bc.evt modeM0/AS1C04_009T06_9000002960cztM0_level2_quad_clean.evt
Size (bytes)3,333,795,8401,366,044,480
Size3.1 GB 1.3 GB
Events in quadrant A19,143,2119,244,944
Events in quadrant B19,078,7179,514,323
Events in quadrant C15,139,6189,300,103
Events in quadrant D42,633,8358,313,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014840
B014840
C014840
D014840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01683810
B01651390
C01525680
D02565280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7297625773.531298%
B7297616102.206205%
C7297611561.584082%
D729761130515.491394%

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 85236 72972 177 177 0.21% 0.24%
B 85236 72966 87 87 0.10% 0.12%
C 85236 72971 49 49 0.06% 0.07%
D 85236 72967 1528 1528 1.79% 2.09%

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 6 16 2309787 2831.31 3729 3660 814.5
A 14 238 2102375 2576.67 3729 3660 814.5
A 14 254 146226 175.03 3729 3660 814.5
B 10 245 2529712 3511.93 3812 3722 719.3
B 7 220 552092 762.41 3812 3722 719.3
B 4 216 337604 464.2 3812 3722 719.3
C 3 233 402318 454.29 3699 3689 877.5
C 5 112 400276 451.96 3699 3689 877.5
C 0 207 103300 113.52 3699 3689 877.5
D 1 52 7838636 9440.93 3504 3381 829.9
D 7 238 6748779 8127.72 3504 3381 829.9
D 7 38 6237772 7512.0 3504 3381 829.9

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