ASTROSAT CZTI

Data Quality Report

Orbit 45965

Creation date: 2024-06-27T23:18:15.461049
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/AS1A13_071T06_9000006146_45965cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45965cztM0_level2_quad_clean.evt
Size (bytes)122,155,20012,263,040
Size116.5 MB 11.7 MB
Events in quadrant A995,24397,825
Events in quadrant B1,858,71032,301
Events in quadrant C419,052102,584
Events in quadrant D1,179,87572,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035411
B060981
C017591
D041011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139832442026024139831250255918
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A849728.480565%
B84966578.327444%
C84920.235571%
D84920223.792697%

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 864 849 33 33 3.82% 3.89%
B 864 850 589 589 68.17% 69.29%
C 864 850 0 0 0.00% 0.00%
D 864 850 196 196 22.69% 23.06%

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 10 83 601014 26347.21 99 97 22.8
A 0 243 2656 112.2 99 97 22.8
A 13 6 2300 96.59 99 97 22.8
B 3 112 1492145 88754.86 75 72 16.8
B 5 255 19720 1168.75 75 72 16.8
B 0 186 17903 1060.66 75 72 16.8
C 3 233 5323 199.38 104 104 26.2
C 14 254 5155 192.96 104 104 26.2
C 8 128 1050 36.14 104 104 26.2
D 2 37 390982 15828.87 93 90 24.7
D 11 241 321827 13028.49 93 90 24.7
D 5 171 37775 1526.02 93 90 24.7

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