ASTROSAT CZTI

Data Quality Report

Orbit 37042

Creation date: 2024-06-27T21:34:54.520336
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/AS1T05_044T01_9000005270_37042cztM0_level2.evt modeM0/AS1T05_044T01_9000005270_37042cztM0_level2_quad_clean.evt
Size (bytes)529,119,36075,625,920
Size504.6 MB 72.1 MB
Events in quadrant A3,007,806515,123
Events in quadrant B3,916,446505,278
Events in quadrant C3,854,385480,203
Events in quadrant D4,897,146428,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122083
B0150192
C0146322
D0180592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5148210.407925%
B51483005.827506%
C51482925.672106%
D514963812.390755%

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 7182 5149 11 11 0.15% 0.21%
B 7182 5149 156 156 2.17% 3.03%
C 7182 5149 291 291 4.05% 5.65%
D 7183 5150 604 604 8.41% 11.73%

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 268955 2082.39 641 631 128.9
A 11 254 230222 1781.79 641 631 128.9
A 13 248 17204 128.62 641 631 128.9
B 5 184 347904 2978.0 626 614 116.6
B 0 182 239397 2047.55 626 614 116.6
B 5 172 230362 1970.08 626 614 116.6
C 10 20 446447 3201.88 605 612 139.2
C 0 10 316385 2267.81 605 612 139.2
C 14 254 231985 1661.66 605 612 139.2
D 2 250 1115986 7789.17 582 568 143.2
D 12 233 500038 3487.89 582 568 143.2
D 12 235 325185 2266.86 582 568 143.2

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