ASTROSAT CZTI

Data Quality Report

Orbit 20190110_A05_015T01_9000002650_level2

Creation date: 2019-01-18T15:05:25.427395
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_015T01_9000002650cztM0_level2.evt modeM0/AS1A05_015T01_9000002650cztM0_level2_quad_clean.evt
Size (bytes)24,122,180,1604,468,487,040
Size22.5 GB 4.2 GB
Events in quadrant A158,440,84928,522,730
Events in quadrant B167,627,81129,095,992
Events in quadrant C173,763,61727,777,523
Events in quadrant D208,149,32127,035,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068120
B068120
C068120
D066840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06971370
B07175230
C07331440
D08518110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33473549471.477885%
B33473762711.873411%
C33473798592.945297%
D334737163224.876067%

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 385887 334792 399 399 0.10% 0.12%
B 385887 334792 896 896 0.23% 0.27%
C 385887 334790 2651 2651 0.69% 0.79%
D 385887 334791 10765 10765 2.79% 3.22%

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 15 174 2624568 318.12 40548 39679 8125.6
A 0 226 353167 38.58 40548 39679 8125.6
A 3 137 301137 32.18 40548 39679 8125.6
B 7 220 2054004 264.56 40596 39522 7614.4
B 10 245 1841389 236.64 40596 39522 7614.4
B 12 111 915047 114.98 40596 39522 7614.4
C 4 254 12485836 1384.65 38790 39069 8989.1
C 14 238 6004048 663.58 38790 39069 8989.1
C 3 233 1808952 196.89 38790 39069 8989.1
D 7 238 48241796 5193.02 38703 37785 9282.5
D 10 70 3861986 411.98 38703 37785 9282.5
D 1 52 2815041 299.19 38703 37785 9282.5

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