ASTROSAT CZTI

Data Quality Report

Orbit 22741

Creation date: 2024-06-27T18:45:04.116677
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/AS1A08_007T01_9000003362_22741cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22741cztM0_level2_quad_clean.evt
Size (bytes)541,468,80086,682,240
Size516.4 MB 82.7 MB
Events in quadrant A3,503,119562,590
Events in quadrant B3,635,665566,088
Events in quadrant C3,609,711533,347
Events in quadrant D5,198,928498,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143532
B0147112
C0148312
D0198932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66541342.013826%
B66541762.645026%
C66542113.171025%
D66544787.183649%

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 7869 6655 0 0 0.00% 0.00%
B 7869 6655 7 7 0.09% 0.11%
C 7869 6655 9 9 0.11% 0.14%
D 7869 6655 310 310 3.94% 4.66%

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 11777 60.57 908 891 179.7
A 0 226 8020 39.66 908 891 179.7
A 3 137 6758 32.64 908 891 179.7
B 0 228 63135 382.19 894 874 162.9
B 0 197 25152 149.03 894 874 162.9
B 0 230 22102 130.31 894 874 162.9
C 14 238 139761 710.06 856 861 195.6
C 0 207 98121 497.2 856 861 195.6
C 10 22 24878 122.78 856 861 195.6
D 1 52 1246367 6096.47 852 826 204.3
D 12 227 532869 2604.15 852 826 204.3
D 12 233 68665 332.04 852 826 204.3

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