ASTROSAT CZTI

Data Quality Report

Orbit 02280

Creation date: 2024-06-27T14:15:36.902794
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/AS1T01_058T01_9000000348_02280cztM0_level2.evt modeM0/AS1T01_058T01_9000000348_02280cztM0_level2_quad_clean.evt
Size (bytes)389,148,48090,489,600
Size371.1 MB 86.3 MB
Events in quadrant A2,754,715562,891
Events in quadrant B2,976,887572,947
Events in quadrant C2,847,870583,502
Events in quadrant D2,763,220567,682

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131291
B0136521
C0132241
D0133671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500230.353846%
B6500400.615385%
C650050.076923%
D6500240.369231%

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 7185 6500 0 0 0.00% 0.00%
B 7185 6500 10 10 0.14% 0.15%
C 7185 6501 1 1 0.01% 0.02%
D 7185 6501 12 12 0.17% 0.18%

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 12 194 8029 49.85 714 698 147.1
A 0 226 7709 47.67 714 698 147.1
A 13 9 2783 14.18 714 698 147.1
B 3 0 148691 1053.63 724 706 140.5
B 15 85 30953 215.35 724 706 140.5
B 12 111 10999 73.28 724 706 140.5
C 5 234 72691 432.04 701 704 166.6
C 14 252 10257 57.33 701 704 166.6
C 8 112 8060 44.15 701 704 166.6
D 9 66 62730 378.54 689 673 163.9
D 9 64 39765 238.46 689 673 163.9
D 12 126 33620 200.97 689 673 163.9

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