ASTROSAT CZTI

Data Quality Report

Orbit 25235

Creation date: 2024-06-27T19:15:21.700673
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/AS1A07_097T01_9000003692_25235cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25235cztM0_level2_quad_clean.evt
Size (bytes)666,636,480103,775,040
Size635.8 MB 99.0 MB
Events in quadrant A3,970,409660,006
Events in quadrant B4,032,073668,906
Events in quadrant C4,076,515639,011
Events in quadrant D7,564,892614,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170310
B0171670
C0172190
D0281840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80571091.352861%
B80581481.836684%
C80582162.680566%
D80585827.222636%

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 8697 8059 6 6 0.07% 0.07%
B 8698 8060 4 4 0.05% 0.05%
C 8698 8060 28 28 0.32% 0.35%
D 8698 8060 249 249 2.86% 3.09%

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 57569 275.19 1014 989 205.6
A 13 254 13390 60.31 1014 989 205.6
A 3 137 9557 41.67 1014 989 205.6
B 0 190 32519 161.4 1009 983 195.4
B 12 111 24331 119.49 1009 983 195.4
B 10 251 23044 112.9 1009 983 195.4
C 14 238 153219 660.36 971 972 230.6
C 2 16 102041 438.38 971 972 230.6
C 3 233 30913 129.87 971 972 230.6
D 1 52 1815840 7726.03 962 933 234.9
D 8 195 712297 3028.26 962 933 234.9
D 10 70 506210 2150.95 962 933 234.9

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