ASTROSAT CZTI

Data Quality Report

Orbit 27323

Creation date: 2024-06-27T19:38:52.346452
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/AS1T03_255T01_9000003922_27323cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27323cztM0_level2_quad_clean.evt
Size (bytes)481,858,56070,058,880
Size459.5 MB 66.8 MB
Events in quadrant A3,327,540423,848
Events in quadrant B3,459,234426,728
Events in quadrant C3,381,730405,799
Events in quadrant D3,963,869391,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139720
B0141530
C0141290
D0161510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6784410.604363%
B6784540.795991%
C6783961.415303%
D67831832.697921%

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 7689 6785 0 0 0.00% 0.00%
B 7689 6784 1 1 0.01% 0.01%
C 7688 6784 11 11 0.14% 0.16%
D 7688 6784 131 131 1.70% 1.93%

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 12 189 17045 93.71 854 838 173.0
A 13 254 11450 61.36 854 838 173.0
A 14 239 10087 53.48 854 838 173.0
B 7 205 62330 378.5 850 828 162.5
B 12 111 20207 119.26 850 828 162.5
B 0 219 19320 113.8 850 828 162.5
C 14 238 128931 670.0 812 816 191.2
C 15 208 58122 299.69 812 816 191.2
C 2 16 23509 118.67 812 816 191.2
D 2 250 481905 2440.55 811 793 197.1
D 1 52 147814 745.8 811 793 197.1
D 12 227 119249 600.89 811 793 197.1

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