ASTROSAT CZTI

Data Quality Report

Orbit 12702

Creation date: 2024-06-27T16:31:16.694995
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/AS1A04_174T01_9000001876_12702cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12702cztM0_level2_quad_clean.evt
Size (bytes)1,302,480,000223,053,120
Size1.2 GB 212.7 MB
Events in quadrant A8,541,9711,412,877
Events in quadrant B12,464,1971,334,556
Events in quadrant C8,587,0281,415,628
Events in quadrant D8,629,0391,345,155

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369894
B0483773
C0374693
D0382553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181001590.878453%
B1810015208.397790%
C181001110.613260%
D181001811.000000%

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 20011 18104 4 4 0.02% 0.02%
B 20011 18104 984 984 4.92% 5.44%
C 20011 18104 7 7 0.03% 0.04%
D 20011 18104 84 84 0.42% 0.46%

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 8 15 60282 129.98 2183 2136 447.3
A 9 143 40802 86.44 2183 2136 447.3
A 12 189 40453 85.66 2183 2136 447.3
B 4 239 3626937 8989.54 2100 2047 403.2
B 3 64 181650 445.41 2100 2047 403.2
B 0 219 179680 440.52 2100 2047 403.2
C 15 208 284313 574.67 2123 2146 491.0
C 13 61 15504 27.21 2123 2146 491.0
C 8 128 12074 20.22 2123 2146 491.0
D 1 52 250878 486.35 2107 2057 511.6
D 13 249 167908 324.18 2107 2057 511.6
D 13 104 70748 134.27 2107 2057 511.6

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