ASTROSAT CZTI

Data Quality Report

Orbit 02957

Creation date: 2024-06-27T14:22:43.383431
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/AS1G05_238T04_9000000416_02957cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02957cztM0_level2_common_clean.evt
Size (bytes)352,445,76053,726,400
Size336.1 MB 51.2 MB
Events in quadrant A2,418,577315,375
Events in quadrant B2,622,603313,878
Events in quadrant C2,537,112321,611
Events in quadrant D2,743,399314,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112393
B0117012
C0113902
D0120602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5173390.753915%
B51731302.513049%
C5173130.251305%
D51731222.358399%

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 7298 5174 38 38 0.52% 0.73%
B 7298 5174 105 105 1.44% 2.03%
C 7298 5174 8 8 0.11% 0.15%
D 7298 5174 86 86 1.18% 1.66%

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 0 31 293602 2756.17 521 510 106.3
A 0 50 54571 508.38 521 510 106.3
A 14 249 35758 331.46 521 510 106.3
B 2 249 345400 3347.2 530 518 103.0
B 3 27 56070 539.15 530 518 103.0
B 5 70 35930 343.69 530 518 103.0
C 1 192 341894 2776.0 519 520 123.0
C 6 80 70565 569.59 519 520 123.0
C 0 219 25400 202.32 519 520 123.0
D 2 136 198974 1637.4 503 490 121.2
D 14 81 103531 850.04 503 490 121.2
D 2 209 82763 678.71 503 490 121.2

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
Veto Counter