ASTROSAT CZTI

Data Quality Report

Orbit 51002

Creation date: 2025-03-03T16:33:41.593036
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_001T02_9000006452_51002cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51002cztM0_level2_quad_clean.evt
Size (bytes)476,288,64087,287,040
Size454.2 MB 83.2 MB
Events in quadrant A4,663,285553,119
Events in quadrant B4,876,390607,002
Events in quadrant C3,916,798544,719
Events in quadrant D3,710,190520,719

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178481
B0185731
C0157531
D0152101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59745008.369602%
B59744146.930030%
C59752814.702929%
D59751762.945607%

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 7089 5975 332 332 4.68% 5.56%
B 7089 5975 243 243 3.43% 4.07%
C 7090 5976 216 216 3.05% 3.61%
D 7090 5976 109 109 1.54% 1.82%

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 10 253 381045 2445.18 626 612 155.6
A 3 130 334867 2148.38 626 612 155.6
A 12 80 323745 2076.89 626 612 155.6
B 4 170 901763 6733.14 622 599 133.8
B 12 32 634002 4732.54 622 599 133.8
B 4 171 302529 2255.9 622 599 133.8
C 15 1 348827 2094.36 607 603 166.3
C 14 245 314506 1887.94 607 603 166.3
C 13 3 292967 1758.39 607 603 166.3
D 10 181 460345 2686.06 613 589 171.2
D 15 172 131688 765.93 613 589 171.2
D 7 39 111998 650.89 613 589 171.2

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