ASTROSAT CZTI

Data Quality Report

Orbit 41318

Creation date: 2024-06-27T22:27:29.075495
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/AS1A12_025T15_9000005648_41318cztM0_level2.fits modeM0/AS1A12_025T15_9000005648_41318cztM0_level2_quad_clean.evt
Size (bytes)330,465,60085,475,520
Size315.2 MB 81.5 MB
Events in quadrant A2,825,525578,515
Events in quadrant B2,555,704599,422
Events in quadrant C3,107,245535,500
Events in quadrant D3,338,973510,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113623
B0109982
C0123102
D0134542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5202140.269127%
B5202110.211457%
C52022715.209535%
D52021152.210688%

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 7114 5203 4 4 0.06% 0.08%
B 7114 5203 1 1 0.01% 0.02%
C 7114 5203 267 267 3.75% 5.13%
D 7114 5203 116 116 1.63% 2.23%

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 505794 4148.29 587 575 121.8
A 12 189 32253 260.1 587 575 121.8
A 13 6 15983 126.51 587 575 121.8
B 0 229 190899 1686.94 579 564 112.8
B 7 202 33533 292.2 579 564 112.8
B 0 245 26765 232.22 579 564 112.8
C 0 10 743935 5800.26 548 551 128.2
C 15 214 218136 1697.71 548 551 128.2
C 12 249 5630 39.63 548 551 128.2
D 5 222 433816 3104.28 565 548 139.6
D 2 249 290645 2078.49 565 548 139.6
D 13 249 288759 2064.98 565 548 139.6

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