ASTROSAT CZTI

Data Quality Report

Orbit 20181113_A05_225T02_9000002510_level2

Creation date: 2018-11-16T14:49:14.622356
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_225T02_9000002510cztM0_level2_bc.evt modeM0/AS1A05_225T02_9000002510cztM0_level2_quad_clean.evt
Size (bytes)226,566,72085,936,320
Size216.1 MB 82.0 MB
Events in quadrant A3,358,751536,783
Events in quadrant B998,708598,905
Events in quadrant C940,934573,667
Events in quadrant D1,237,244564,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205510
B097380
C095500
D0104680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4670100821.584582%
B4669791.692011%
C4669711.520668%
D4669811.734847%

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 5306 4669 16 16 0.30% 0.34%
B 5305 4670 1 1 0.02% 0.02%
C 5305 4671 0 0 0.00% 0.00%
D 5305 4671 6 6 0.11% 0.13%

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 2391852 47501.79 219 215 50.3
A 12 189 65091 1288.54 219 215 50.3
A 0 23 49958 987.98 219 215 50.3
B 15 35 14821 301.56 238 232 48.4
B 0 189 12554 254.7 238 232 48.4
B 0 229 11786 238.83 238 232 48.4
C 3 233 59900 1050.93 228 226 56.8
C 5 112 1427 21.15 228 226 56.8
C 13 61 1359 19.95 228 226 56.8
D 1 52 230823 4112.79 232 223 56.1
D 13 112 41864 742.67 232 223 56.1
D 15 0 30894 547.02 232 223 56.1

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