ASTROSAT CZTI

Data Quality Report

Orbit 18466

Creation date: 2024-06-27T17:50:05.184481
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_072T02_9000002736_18466cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18466cztM0_level2_quad_clean.evt
Size (bytes)496,327,68085,034,880
Size473.3 MB 81.1 MB
Events in quadrant A3,514,173531,652
Events in quadrant B3,446,028543,021
Events in quadrant C3,349,499529,584
Events in quadrant D4,274,351511,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148972
B0145992
C0142502
D0174272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6589951.441797%
B6590901.365706%
C65901171.775417%
D65902043.095599%

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 8689 6589 17 17 0.20% 0.26%
B 8690 6590 4 4 0.05% 0.06%
C 8690 6590 0 0 0.00% 0.00%
D 8690 6590 126 126 1.45% 1.91%

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 0 13 105656 609.43 843 825 172.0
A 4 2 97726 563.32 843 825 172.0
A 15 174 43124 245.9 843 825 172.0
B 10 245 48214 291.21 849 826 162.7
B 7 220 40824 245.8 849 826 162.7
B 12 111 19097 112.28 849 826 162.7
C 14 238 125380 644.19 823 830 193.3
C 3 233 13958 67.9 823 830 193.3
C 13 61 5700 25.19 823 830 193.3
D 7 238 645359 3178.14 828 804 202.8
D 7 38 204818 1005.94 828 804 202.8
D 13 168 120556 590.47 828 804 202.8

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