ASTROSAT CZTI

Data Quality Report

Orbit 24421

Creation date: 2024-06-27T19:05:52.186081
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/AS1A07_054T01_9000003604_24421cztM0_level2.evt modeM0/AS1A07_054T01_9000003604_24421cztM0_level2_quad_clean.evt
Size (bytes)565,418,880128,407,680
Size539.2 MB 122.5 MB
Events in quadrant A3,010,256877,008
Events in quadrant B3,117,607902,583
Events in quadrant C3,119,700869,315
Events in quadrant D7,426,970777,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134952
B0136132
C0136272
D0267002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6623200.301978%
B6623460.694549%
C6623660.996527%
D662390313.634305%

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 7623 6624 0 0 0.00% 0.00%
B 7623 6624 0 0 0.00% 0.00%
C 7623 6624 0 0 0.00% 0.00%
D 7623 6624 569 569 7.46% 8.59%

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 10613 63.94 780 764 154.0
A 3 137 6959 40.22 780 764 154.0
A 0 226 6503 37.26 780 764 154.0
B 12 111 17623 114.67 788 767 147.0
B 11 111 15562 100.65 788 767 147.0
B 12 17 13931 89.55 788 767 147.0
C 14 238 123235 689.83 762 766 177.5
C 2 16 15074 80.59 762 766 177.5
C 3 233 9473 49.04 762 766 177.5
D 7 238 3419213 19532.34 722 699 175.0
D 12 218 854533 4878.54 722 699 175.0
D 1 52 274889 1566.63 722 699 175.0

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