ASTROSAT CZTI

Data Quality Report

Orbit 24698

Creation date: 2024-06-27T19:08:53.962040
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_191T01_9000003618_24698cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24698cztM0_level2_quad_clean.evt
Size (bytes)545,091,840135,322,560
Size519.8 MB 129.1 MB
Events in quadrant A3,403,548928,121
Events in quadrant B4,065,315920,898
Events in quadrant C3,800,158883,412
Events in quadrant D4,752,557866,777

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149771
B0169152
C0159081
D0187941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7172440.613497%
B71722733.806470%
C7172821.143335%
D71722543.541550%

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 7512 7173 13 13 0.17% 0.18%
B 7512 7173 150 150 2.00% 2.09%
C 7512 7173 18 18 0.24% 0.25%
D 7512 7173 194 194 2.58% 2.70%

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 96 115203 668.42 851 831 171.1
A 13 254 12072 65.69 851 831 171.1
A 3 137 7898 41.3 851 831 171.1
B 4 80 638006 4057.11 835 815 157.1
B 0 189 78519 494.76 835 815 157.1
B 4 173 50355 315.43 835 815 157.1
C 7 247 399548 2128.9 804 804 187.3
C 14 238 131093 695.61 804 804 187.3
C 2 16 89528 473.7 804 804 187.3
D 1 52 750392 3834.33 810 785 195.5
D 8 195 618747 3160.95 810 785 195.5
D 7 238 227243 1158.36 810 785 195.5

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