ASTROSAT CZTI

Data Quality Report

Orbit 20961

Creation date: 2024-06-27T18:21:48.122612
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_131T01_9000003090_20961cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20961cztM0_level2_quad_clean.evt
Size (bytes)504,956,16069,410,880
Size481.6 MB 66.2 MB
Events in quadrant A3,277,697419,451
Events in quadrant B3,559,840423,343
Events in quadrant C3,313,206416,283
Events in quadrant D4,705,603393,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134962
B0143252
C0134352
D0181913

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6426671.042639%
B64261482.303143%
C64261211.882975%
D64252403.735409%

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 7546 6427 2 2 0.03% 0.03%
B 7546 6427 41 41 0.54% 0.64%
C 7546 6427 0 0 0.00% 0.00%
D 7545 6426 175 175 2.32% 2.72%

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 5 16 43465 253.34 837 823 168.3
A 6 16 20154 114.85 837 823 168.3
A 0 226 7332 38.67 837 823 168.3
B 7 220 238872 1507.67 837 816 157.9
B 0 245 19416 117.8 837 816 157.9
B 0 230 18432 111.57 837 816 157.9
C 14 238 128057 678.25 810 818 187.6
C 0 79 21691 111.26 810 818 187.6
C 7 247 5949 27.35 810 818 187.6
D 1 52 991622 5069.39 809 787 195.5
D 1 239 487157 2488.4 809 787 195.5
D 7 223 115751 588.19 809 787 195.5

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