ASTROSAT CZTI

Data Quality Report

Orbit 15525

Creation date: 2024-06-27T17:09:50.786858
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/AS1T02_079T01_9000002298_15525cztM0_level2.evt modeM0/AS1T02_079T01_9000002298_15525cztM0_level2_quad_clean.evt
Size (bytes)504,293,76095,641,920
Size480.9 MB 91.2 MB
Events in quadrant A3,467,320601,957
Events in quadrant B3,727,384609,486
Events in quadrant C3,531,562589,690
Events in quadrant D4,038,626575,014

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151993
B0158142
C0152692
D0172522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7482290.387597%
B7482600.801925%
C7482510.681636%
D7482480.641540%

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 9123 7485 0 0 0.00% 0.00%
B 9123 7485 9 9 0.10% 0.12%
C 9123 7485 0 0 0.00% 0.00%
D 9123 7485 27 27 0.30% 0.36%

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 0 253 60702 330.2 885 865 181.2
A 0 226 7732 37.89 885 865 181.2
A 9 143 7644 37.41 885 865 181.2
B 4 173 94558 551.87 888 865 169.8
B 4 142 25573 145.53 888 865 169.8
B 0 189 23676 134.36 888 865 169.8
C 14 238 130259 649.41 850 854 199.3
C 3 233 63604 314.91 850 854 199.3
C 10 22 16436 78.2 850 854 199.3
D 5 222 300710 1412.06 858 832 212.4
D 12 221 297719 1397.97 858 832 212.4
D 1 52 77651 361.72 858 832 212.4

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