ASTROSAT CZTI

Data Quality Report

Orbit 28362

Creation date: 2024-06-27T19:50:57.851170
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/AS1A10_101T02_9000004084_28362cztM0_level2.evt modeM0/AS1A10_101T02_9000004084_28362cztM0_level2_quad_clean.evt
Size (bytes)651,041,28081,429,120
Size620.9 MB 77.7 MB
Events in quadrant A3,540,635501,299
Events in quadrant B4,524,268503,590
Events in quadrant C3,623,975486,172
Events in quadrant D7,516,627448,934

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153850
B0180800
C0154470
D0274760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75491171.549874%
B75502733.615894%
C75501501.986755%
D755082110.874172%

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 7799 7549 0 0 0.00% 0.00%
B 7800 7550 97 97 1.24% 1.28%
C 7800 7551 0 0 0.00% 0.00%
D 7800 7551 643 643 8.24% 8.52%

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 13 254 11919 58.99 918 897 186.9
A 3 137 9590 46.52 918 897 186.9
A 0 226 7640 36.09 918 897 186.9
B 10 245 785068 4389.31 912 886 178.7
B 10 246 110588 614.04 912 886 178.7
B 0 230 25290 136.6 912 886 178.7
C 14 238 141009 669.83 888 891 209.2
C 3 233 20366 93.1 888 891 209.2
C 13 61 6190 25.33 888 891 209.2
D 1 52 3591160 17430.09 858 833 206.0
D 8 195 332163 1608.52 858 833 206.0
D 7 238 146122 705.34 858 833 206.0

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