ASTROSAT CZTI

Data Quality Report

Orbit 34598

Creation date: 2022-02-23T10:43:24.434228
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/AS1C07_014T01_9000004950_34598cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34598cztM0_level2_quad_clean.evt
Size (bytes)505,670,40094,717,440
Size482.2 MB 90.3 MB
Events in quadrant A2,566,524657,966
Events in quadrant B3,504,459641,150
Events in quadrant C2,872,691638,479
Events in quadrant D6,031,633579,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105633
B0134842
C0113772
D0215952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5008180.359425%
B50083106.190096%
C5008450.898562%
D50083547.068690%

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 7072 5009 8 8 0.11% 0.16%
B 7072 5009 220 220 3.11% 4.39%
C 7072 5009 35 35 0.49% 0.70%
D 7072 5009 409 409 5.78% 8.17%

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 9 143 46429 355.45 638 627 128.9
A 10 83 44719 342.18 638 627 128.9
A 13 254 9340 67.62 638 627 128.9
B 5 172 792646 6674.62 613 599 118.7
B 5 255 117050 981.34 613 599 118.7
B 0 189 88011 736.62 613 599 118.7
C 15 214 213954 1511.75 607 616 141.1
C 0 10 130299 918.95 607 616 141.1
C 0 207 59120 414.57 607 616 141.1
D 8 195 2708406 16429.35 598 589 164.8
D 7 38 554071 3358.18 598 589 164.8
D 13 249 141908 857.44 598 589 164.8

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