ASTROSAT CZTI

Data Quality Report

Orbit 28542

Creation date: 2024-06-27T19:53:04.420833
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/AS1A10_058T09_9000004100_28542cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28542cztM0_level2_quad_clean.evt
Size (bytes)575,196,480102,885,120
Size548.6 MB 98.1 MB
Events in quadrant A3,567,604692,276
Events in quadrant B3,620,306697,281
Events in quadrant C3,372,258655,958
Events in quadrant D6,421,440618,731

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148832
B0150682
C0142602
D0236202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64711021.576263%
B64711552.395302%
C64721111.715080%
D647267410.414091%

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 7606 6471 22 22 0.29% 0.34%
B 7606 6471 54 54 0.71% 0.83%
C 7607 6472 0 0 0.00% 0.00%
D 7607 6472 558 558 7.34% 8.62%

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 15 174 211350 1211.97 870 853 173.7
A 13 254 12005 64.21 870 853 173.7
A 3 137 7953 40.88 870 853 173.7
B 10 245 203622 1254.81 852 833 161.6
B 4 80 46904 285.08 852 833 161.6
B 12 111 19397 114.87 852 833 161.6
C 14 238 139128 732.32 812 821 188.9
C 7 247 32114 165.69 812 821 188.9
C 3 233 14308 71.41 812 821 188.9
D 1 52 2802266 14619.84 802 781 191.6
D 8 195 373606 1945.63 802 781 191.6
D 10 199 48122 247.05 802 781 191.6

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