ASTROSAT CZTI

Data Quality Report

Orbit 09449

Creation date: 2024-06-27T15:46:04.017524
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/AS1A02_178T01_9000001340_09449cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09449cztM0_level2_quad_clean.evt
Size (bytes)991,480,320104,316,480
Size945.5 MB 99.5 MB
Events in quadrant A5,095,787701,733
Events in quadrant B4,306,556702,308
Events in quadrant C15,599,344423,690
Events in quadrant D4,391,438679,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01882
B01880
C01884
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02125344
B01926328
C053139343
D01985544

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9395810.862161%
B9398500.532028%
C9369474450.635073%
D9391700.745395%

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 9886 9412 19 19 0.19% 0.20%
B 9886 9411 4 4 0.04% 0.04%
C 9885 9377 3969 3969 40.15% 42.33%
D 9886 9411 35 35 0.35% 0.37%

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 8 5 568867 2566.02 1075 1053 221.3
A 1 162 164470 738.5 1075 1053 221.3
A 4 2 70101 312.04 1075 1053 221.3
B 0 214 44469 210.57 1072 1044 206.2
B 4 80 30320 141.96 1072 1044 206.2
B 0 219 30318 141.95 1072 1044 206.2
C 4 254 12692782 79410.44 687 690 159.8
C 9 68 218826 1364.81 687 690 159.8
C 13 61 5174 28.05 687 690 159.8
D 8 195 161971 628.19 1033 1006 256.2
D 7 71 121229 469.19 1033 1006 256.2
D 1 52 106264 410.79 1033 1006 256.2

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