ASTROSAT CZTI

Data Quality Report

Orbit 37764

Creation date: 2024-06-27T21:44:07.565141
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/AS1A11_106T02_9000005344_37764cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37764cztM0_level2_quad_clean.evt
Size (bytes)459,400,32071,386,560
Size438.1 MB 68.1 MB
Events in quadrant A2,815,092453,689
Events in quadrant B2,674,708460,449
Events in quadrant C2,734,992457,887
Events in quadrant D5,328,552418,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115103
B0113862
C0113012
D0195122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5308200.376790%
B5308400.753580%
C5308220.414469%
D53084628.703843%

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 7131 5309 10 10 0.14% 0.19%
B 7131 5309 22 22 0.31% 0.41%
C 7131 5309 26 26 0.36% 0.49%
D 7131 5309 482 482 6.76% 9.08%

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 335601 2731.18 610 599 122.7
A 15 222 27215 216.99 610 599 122.7
A 15 254 27107 216.11 610 599 122.7
B 0 229 128860 1123.29 601 584 114.2
B 5 255 67209 583.42 601 584 114.2
B 5 172 44956 388.56 601 584 114.2
C 15 214 230842 1690.12 588 592 136.2
C 0 10 128734 940.61 588 592 136.2
C 14 254 40293 291.42 588 592 136.2
D 12 235 1191609 8457.34 577 563 140.8
D 2 249 781724 5546.84 577 563 140.8
D 2 250 462624 3280.99 577 563 140.8

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