ASTROSAT CZTI

Data Quality Report

Orbit 43836

Creation date: 2024-06-27T22:56:22.821703
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_018T01_9000005906_43836cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43836cztM0_level2_quad_clean.evt
Size (bytes)733,155,840105,791,040
Size699.2 MB 100.9 MB
Events in quadrant A6,297,954700,993
Events in quadrant B3,968,653814,527
Events in quadrant C7,464,806739,693
Events in quadrant D8,915,766503,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234972
B0158342
C0266662
D0307612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636387613.767091%
B63622063.237975%
C63625989.399560%
D6362216233.983024%

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 7573 6363 618 618 8.16% 9.71%
B 7572 6362 89 89 1.18% 1.40%
C 7572 6362 307 307 4.05% 4.83%
D 7572 6362 2012 2012 26.57% 31.63%

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 15 223 1962133 12704.78 755 742 154.4
A 10 83 1023055 6621.97 755 742 154.4
A 13 248 263652 1702.98 755 742 154.4
B 4 170 244139 1589.25 789 770 153.1
B 5 235 198869 1293.63 789 770 153.1
B 0 200 120903 784.5 789 770 153.1
C 3 233 4370571 24600.18 758 763 177.6
C 14 254 58237 323.55 758 763 177.6
C 15 158 37735 208.14 758 763 177.6
D 12 33 3011170 18145.37 656 636 165.9
D 10 102 1635232 9852.19 656 636 165.9
D 5 235 592560 3567.7 656 636 165.9

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