ASTROSAT CZTI

Data Quality Report

Orbit 41176

Creation date: 2024-06-27T22:25:32.852171
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/AS1A12_101T04_9000005610_41176cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41176cztM0_level2_quad_clean.evt
Size (bytes)423,138,24094,726,080
Size403.5 MB 90.3 MB
Events in quadrant A3,254,202665,548
Events in quadrant B4,776,728617,044
Events in quadrant C4,101,065583,836
Events in quadrant D3,061,936580,746

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133633
B0185412
C0161752
D0135682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6027160.265472%
B602766511.033682%
C60275018.312593%
D60271201.991040%

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 8682 6029 6 6 0.07% 0.10%
B 8682 6029 521 521 6.00% 8.64%
C 8682 6029 432 432 4.98% 7.17%
D 8682 6029 109 109 1.26% 1.81%

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 594677 4362.07 660 647 136.2
A 12 189 82311 599.67 660 647 136.2
A 13 6 13852 96.97 660 647 136.2
B 0 245 982811 7983.14 625 607 123.0
B 0 186 854066 6936.73 625 607 123.0
B 0 229 218383 1770.04 625 607 123.0
C 9 54 1031793 7198.6 610 614 143.2
C 0 10 356823 2486.67 610 614 143.2
C 15 214 244667 1703.72 610 614 143.2
D 13 249 343264 2183.63 634 617 156.9
D 2 249 195296 1240.65 634 617 156.9
D 10 34 45479 285.9 634 617 156.9

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