ASTROSAT CZTI

Data Quality Report

Orbit 19174

Creation date: 2024-06-27T17:59:45.983008
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_046T01_9000002838_19174cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19174cztM0_level2_quad_clean.evt
Size (bytes)473,947,20068,575,680
Size452.0 MB 65.4 MB
Events in quadrant A3,238,867407,240
Events in quadrant B3,409,986414,038
Events in quadrant C3,649,849403,850
Events in quadrant D3,610,146394,623

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138742
B0143392
C0149872
D0152052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6549711.084135%
B6549871.328447%
C65491191.817071%
D65491191.817071%

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 7594 6549 0 0 0.00% 0.00%
B 7594 6549 7 7 0.09% 0.11%
C 7594 6549 3 3 0.04% 0.05%
D 7594 6549 50 50 0.66% 0.76%

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 11 47 15385 86.82 831 814 167.8
A 11 29 14697 82.72 831 814 167.8
A 13 254 8877 48.04 831 814 167.8
B 0 190 55105 342.67 828 806 158.5
B 4 171 34335 211.6 828 806 158.5
B 7 220 27149 166.25 828 806 158.5
C 3 233 396212 2123.86 798 803 186.2
C 14 238 124362 663.67 798 803 186.2
C 0 207 19757 101.81 798 803 186.2
D 1 52 238358 1192.26 811 788 199.3
D 11 176 230242 1151.53 811 788 199.3
D 10 66 50723 250.6 811 788 199.3

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