ASTROSAT CZTI

Data Quality Report

Orbit 37723

Creation date: 2024-06-27T21:43:37.438550
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/AS1A11_106T02_9000005344_37723cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37723cztM0_level2_quad_clean.evt
Size (bytes)657,354,24057,481,920
Size626.9 MB 54.8 MB
Events in quadrant A9,193,684303,256
Events in quadrant B3,090,724361,356
Events in quadrant C2,892,927363,781
Events in quadrant D4,378,441346,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309273
B0124472
C0114152
D0164572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5208268851.612903%
B5208771.478495%
C5208250.480031%
D52084568.755760%

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 7271 5209 2469 2469 33.96% 47.40%
B 7270 5207 55 55 0.76% 1.06%
C 7270 5207 22 22 0.30% 0.42%
D 7270 5207 431 431 5.93% 8.28%

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 15 222 6246221 54124.73 573 562 115.4
A 9 143 367983 3184.06 573 562 115.4
A 10 83 312889 2706.62 573 562 115.4
B 5 172 214043 1765.95 647 633 120.8
B 0 189 70131 575.09 647 633 120.8
B 5 255 58125 475.74 647 633 120.8
C 15 214 223249 1512.92 645 652 147.1
C 0 10 120067 811.63 645 652 147.1
C 14 254 23892 157.96 645 652 147.1
D 2 249 905780 5750.76 626 613 157.4
D 12 233 243265 1541.63 626 613 157.4
D 1 47 206740 1309.58 626 613 157.4

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