ASTROSAT CZTI

Data Quality Report

Orbit 37871

Creation date: 2024-06-27T21:45:31.563484
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_001T12_9000005352_37871cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37871cztM0_level2_quad_clean.evt
Size (bytes)414,152,64071,026,560
Size395.0 MB 67.7 MB
Events in quadrant A2,846,895470,823
Events in quadrant B3,003,995469,141
Events in quadrant C2,751,143439,897
Events in quadrant D3,581,154400,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114983
B0123142
C0113802
D0141642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5288180.340393%
B5288971.834342%
C5288510.964448%
D52882154.065809%

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 7170 5289 11 11 0.15% 0.21%
B 7170 5289 74 74 1.03% 1.40%
C 7170 5289 49 49 0.68% 0.93%
D 7170 5289 182 182 2.54% 3.44%

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 360255 2991.52 590 578 120.2
A 15 222 133542 1105.89 590 578 120.2
A 9 143 32842 268.35 590 578 120.2
B 5 172 418317 3794.15 582 567 110.1
B 0 229 117468 1061.73 582 567 110.1
B 0 189 45639 409.36 582 567 110.1
C 15 214 224582 1692.31 572 576 132.4
C 0 10 195945 1475.97 572 576 132.4
C 14 254 67424 505.02 572 576 132.4
D 1 52 482367 3466.67 570 555 139.0
D 1 47 279048 2003.78 570 555 139.0
D 2 249 248176 1781.65 570 555 139.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter