ASTROSAT CZTI

Data Quality Report

Orbit 41241

Creation date: 2024-06-27T22:26:22.544937
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/AS1T05_102T01_9000005634_41241cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41241cztM0_level2_quad_clean.evt
Size (bytes)328,017,60089,942,400
Size312.8 MB 85.8 MB
Events in quadrant A2,863,115611,062
Events in quadrant B2,685,901624,879
Events in quadrant C2,959,815595,931
Events in quadrant D3,234,219532,831

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114612
B0113511
C0118281
D0129861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512290.175713%
B5122601.171417%
C5122771.503319%
D51222595.056619%

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 7065 5123 3 3 0.04% 0.06%
B 7065 5123 46 46 0.65% 0.90%
C 7065 5123 73 73 1.03% 1.42%
D 7065 5123 143 143 2.02% 2.79%

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 450322 3695.83 595 583 121.7
A 0 8 73803 601.7 595 583 121.7
A 2 79 20034 159.84 595 583 121.7
B 0 186 233427 2047.84 585 568 113.7
B 0 245 120192 1052.01 585 568 113.7
B 12 111 13842 116.74 585 568 113.7
C 9 54 233695 1714.99 581 584 135.9
C 15 214 218925 1606.33 581 584 135.9
C 0 10 182296 1336.85 581 584 135.9
D 13 249 525809 3695.1 575 560 142.1
D 5 222 160979 1128.54 575 560 142.1
D 2 249 139484 977.32 575 560 142.1

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