ASTROSAT CZTI

Data Quality Report

Orbit 29770

Creation date: 2024-06-27T20:07:35.239449
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_291T01_9000004278_29770cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29770cztM0_level2_quad_clean.evt
Size (bytes)1,429,300,800252,250,560
Size1.3 GB 240.6 MB
Events in quadrant A8,513,4311,640,802
Events in quadrant B14,610,4001,638,134
Events in quadrant C9,326,8681,573,263
Events in quadrant D9,604,9311,530,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371114
B0567493
C0387903
D0396993

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182461150.630275%
B182474502.466159%
C182473321.819477%
D182471500.822053%

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 19641 18247 0 0 0.00% 0.00%
B 19642 18247 80 80 0.41% 0.44%
C 19642 18247 41 41 0.21% 0.22%
D 19642 18248 25 25 0.13% 0.14%

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 39923 86.03 2192 2144 439.1
A 14 250 35638 76.27 2192 2144 439.1
A 3 137 22145 45.55 2192 2144 439.1
B 6 159 5169183 12428.56 2169 2109 415.7
B 0 229 764773 1834.46 2169 2109 415.7
B 5 255 59682 138.48 2169 2109 415.7
C 10 22 422741 853.64 2111 2125 492.7
C 14 238 343318 692.45 2111 2125 492.7
C 3 233 201050 403.72 2111 2125 492.7
D 8 195 1157815 2290.38 2123 2063 504.6
D 2 250 121853 237.39 2123 2063 504.6
D 13 104 112187 218.23 2123 2063 504.6

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