ASTROSAT CZTI

Data Quality Report

Orbit 24146

Creation date: 2024-06-27T19:02:44.600247
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_047T01_9000003572_24146cztM0_level2.evt modeM0/AS1A07_047T01_9000003572_24146cztM0_level2_quad_clean.evt
Size (bytes)485,228,160136,771,200
Size462.7 MB 130.4 MB
Events in quadrant A3,263,256948,745
Events in quadrant B3,373,267954,876
Events in quadrant C3,530,077887,933
Events in quadrant D4,072,394882,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137931
B0140191
C0146391
D0163771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6718771.146174%
B6718630.937779%
C67181732.575171%
D67181482.203037%

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 7643 6718 0 0 0.00% 0.00%
B 7643 6718 3 3 0.04% 0.04%
C 7643 6718 78 78 1.02% 1.16%
D 7643 6719 71 71 0.93% 1.06%

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 10763 59.23 844 827 167.8
A 0 226 7284 38.49 844 827 167.8
A 3 137 6952 36.51 844 827 167.8
B 0 189 104595 674.72 828 810 153.8
B 12 111 17775 110.29 828 810 153.8
B 11 111 16179 99.92 828 810 153.8
C 2 16 240144 1329.97 784 788 180.0
C 14 238 127728 705.33 784 788 180.0
C 0 207 47879 261.66 784 788 180.0
D 8 195 373299 1898.22 810 786 196.2
D 7 238 344104 1749.45 810 786 196.2
D 1 52 258010 1310.74 810 786 196.2

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