ASTROSAT CZTI

Data Quality Report

Orbit 00797

Creation date: 2024-06-27T14:03:03.549478
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/AS1P01_010T01_9000000112_00797cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00797cztM0_level2_quad_clean.evt
Size (bytes)969,770,88097,871,040
Size924.8 MB 93.3 MB
Events in quadrant A7,292,500637,187
Events in quadrant B7,843,645650,224
Events in quadrant C7,121,947626,565
Events in quadrant D6,691,093608,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261910
B0278140
C0255970
D0243850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322440.695982%
B6322150.237267%
C632250.079089%
D6322140.221449%

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 7502 6323 231 231 3.08% 3.65%
B 7502 6323 281 281 3.75% 4.44%
C 7502 6323 114 114 1.52% 1.80%
D 7502 6323 96 96 1.28% 1.52%

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 15 233 95248 208.98 1854 1867 446.8
A 15 171 40451 86.35 1854 1867 446.8
A 12 243 35847 76.05 1854 1867 446.8
B 0 23 154653 331.44 1977 1981 460.6
B 15 22 54639 114.32 1977 1981 460.6
B 5 191 37254 76.58 1977 1981 460.6
C 15 241 43086 83.76 1785 1846 492.4
C 9 52 41103 79.73 1785 1846 492.4
C 3 111 25992 49.04 1785 1846 492.4
D 1 4 168634 318.65 1700 1759 523.7
D 2 225 42125 77.08 1700 1759 523.7
D 13 25 36150 65.67 1700 1759 523.7

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