ASTROSAT CZTI

Data Quality Report

Orbit 45285

Creation date: 2024-06-27T23:11:56.533612
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_024T03_9000006064_45285cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45285cztM0_level2_quad_clean.evt
Size (bytes)479,370,240112,181,760
Size457.2 MB 107.0 MB
Events in quadrant A5,819,433736,405
Events in quadrant B3,431,149798,244
Events in quadrant C3,413,637758,330
Events in quadrant D4,585,677658,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220456
B0144632
C0146232
D0181452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63763365.269762%
B63761312.054580%
C6376961.505646%
D63762874.501255%

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 7610 6375 160 160 2.10% 2.51%
B 7611 6377 52 52 0.68% 0.82%
C 7611 6376 74 74 0.97% 1.16%
D 7611 6377 237 237 3.11% 3.72%

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 2471565 16021.34 739 723 154.2
A 13 248 270209 1747.39 739 723 154.2
A 10 248 205414 1327.25 739 723 154.2
B 5 32 195182 1330.48 752 731 146.2
B 10 3 78653 533.16 752 731 146.2
B 0 189 78106 529.42 752 731 146.2
C 14 254 465030 2690.09 740 745 172.6
C 2 14 29593 167.14 740 745 172.6
C 3 233 20799 116.19 740 745 172.6
D 13 249 425682 2358.55 716 693 180.2
D 2 249 409741 2270.08 716 693 180.2
D 13 84 231590 1281.4 716 693 180.2

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