ASTROSAT CZTI

Data Quality Report

Orbit 02939

Creation date: 2024-06-27T14:22:28.661879
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/AS1P01_999T99_9000000414_02939cztM0_level2.evt modeM0/AS1P01_999T99_9000000414_02939cztM0_level2_quad_clean.evt
Size (bytes)545,011,20045,711,360
Size519.8 MB 43.6 MB
Events in quadrant A2,465,240283,637
Events in quadrant B2,761,168282,004
Events in quadrant C2,762,842270,844
Events in quadrant D8,181,140199,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108462
B0114841
C0116341
D0277791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4946190.384149%
B4946310.626769%
C4946931.880307%
D4946226445.774363%

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 7103 4947 9 9 0.13% 0.18%
B 7103 4947 28 28 0.39% 0.57%
C 7103 4947 70 70 0.99% 1.41%
D 7103 4947 1681 1681 23.67% 33.98%

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 15 249 133164 1241.79 528 517 106.8
A 13 164 90363 841.1 528 517 106.8
A 14 249 51879 480.83 528 517 106.8
B 3 27 444173 4315.29 534 522 102.8
B 3 11 62320 601.09 534 522 102.8
B 8 3 50553 486.64 534 522 102.8
C 0 219 231433 1874.17 520 522 123.2
C 9 204 170493 1379.55 520 522 123.2
C 6 80 107799 870.7 520 522 123.2
D 15 50 2269679 21809.52 416 408 104.0
D 15 194 1436210 13799.21 416 408 104.0
D 14 81 843142 8099.35 416 408 104.0

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
Veto Counter