ASTROSAT CZTI

Data Quality Report

Orbit 44668

Creation date: 2024-06-27T23:05:06.824962
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/AS1A13_072T01_9000006008_44668cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44668cztM0_level2_quad_clean.evt
Size (bytes)548,461,440116,259,840
Size523.1 MB 110.9 MB
Events in quadrant A5,610,591787,075
Events in quadrant B3,504,875824,679
Events in quadrant C3,361,307777,418
Events in quadrant D7,237,888604,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234095
B0157990
C0157990
D0268680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75651992.630535%
B7565791.044283%
C7566250.330426%
D7566129117.063177%

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 7565 7565 85 85 1.12% 1.12%
B 7565 7565 14 14 0.19% 0.19%
C 7566 7566 16 16 0.21% 0.21%
D 7566 7566 1028 1028 13.59% 13.59%

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 1947298 11267.56 823 804 172.8
A 15 223 355919 2055.63 823 804 172.8
A 13 248 84173 482.59 823 804 172.8
B 0 183 104687 634.63 821 795 163.7
B 0 219 43685 262.0 821 795 163.7
B 0 186 34290 204.61 821 795 163.7
C 14 254 83096 441.75 802 805 186.3
C 3 233 80208 426.24 802 805 186.3
C 12 16 21703 112.18 802 805 186.3
D 2 249 1985965 10773.0 733 706 184.3
D 13 249 1289277 6992.43 733 706 184.3
D 1 52 500033 2709.6 733 706 184.3

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